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Alerts Issued in October 2013


Space Weather Message Code: WARK04
Serial Number: 2187
Issue Time: 2013 Oct 31 0144 UTC

CANCEL WARNING: Geomagnetic K-index of 4 expected
Cancel Serial Number: 2186
Original Issue Time: 2013 Oct 30 2245 UTC

Comment: Conditions for this warning no longer exist.
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2186
Issue Time: 2013 Oct 30 2245 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 30 2245 UTC
Valid To: 2013 Oct 31 1300 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2185
Issue Time: 2013 Oct 30 1532 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2184
Valid From: 2013 Oct 30 1230 UTC
Now Valid Until: 2013 Oct 30 2100 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2184
Issue Time: 2013 Oct 30 1226 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 30 1230 UTC
Valid To: 2013 Oct 30 1600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTTP2
Serial Number: 887
Issue Time: 2013 Oct 30 0112 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 29 2146 UTC
Estimated Velocity: 0000 km/s

Comment: Estimated shock velocity not available.
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP4
Serial Number: 435
Issue Time: 2013 Oct 29 2238 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 29 2158 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: SUMX01
Serial Number: 91
Issue Time: 2013 Oct 29 2221 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2013 Oct 29 2142 UTC
Maximum Time: 2013 Oct 29 2154 UTC
End Time: 2013 Oct 29 2201 UTC
X-ray Class: X2.3
Location: N05W90
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: ALTXMF
Serial Number: 198
Issue Time: 2013 Oct 29 2151 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Oct 29 2148 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: WARSUD
Serial Number: 140
Issue Time: 2013 Oct 29 0744 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2013 Oct 29 0820 UTC
Valid To: 2013 Oct 29 0920 UTC
IP Shock Passage Observed: 2013 Oct 29 0722 UTC


Space Weather Message Code: WATA20
Serial Number: 556
Issue Time: 2013 Oct 28 1959 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Oct 29: None (Below G1) Oct 30: None (Below G1) Oct 31: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTTP2
Serial Number: 886
Issue Time: 2013 Oct 28 1538 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 28 1510 UTC
Estimated Velocity: 1607 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: WARPX1
Serial Number: 406
Issue Time: 2013 Oct 28 1330 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 405
Valid From: 2013 Oct 28 0235 UTC
Now Valid Until: 2013 Oct 28 2000 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: ALTTP4
Serial Number: 434
Issue Time: 2013 Oct 28 0518 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 28 0437 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTTP2
Serial Number: 885
Issue Time: 2013 Oct 28 0517 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 28 0437 UTC
Estimated Velocity: 508 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUM10R
Serial Number: 593
Issue Time: 2013 Oct 28 0510 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Oct 28 0438 UTC
Maximum Time: 2013 Oct 28 0438 UTC
End Time: 2013 Oct 28 0439 UTC
Duration: 1 minutes
Peak Flux: 170 sfu
Latest Penticton Noon Flux: 167 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: ALTTP2
Serial Number: 884
Issue Time: 2013 Oct 28 0458 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 28 0200 UTC
Estimated Velocity: 451 km/s

Comment: Speed estimate is prelimiary.
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUMXM5
Serial Number: 106
Issue Time: 2013 Oct 28 0450 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2013 Oct 28 0432 UTC
Maximum Time: 2013 Oct 28 0441 UTC
End Time: 2013 Oct 28 0446 UTC
X-ray Class: M5.1
Optical Class: 2b
Location: N08W71
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.


Space Weather Message Code: ALTXMF
Serial Number: 197
Issue Time: 2013 Oct 28 0441 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Oct 28 0440 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: WARPX1
Serial Number: 405
Issue Time: 2013 Oct 28 0233 UTC

WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2013 Oct 28 0235 UTC
Valid To: 2013 Oct 28 1400 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: SUMX01
Serial Number: 90
Issue Time: 2013 Oct 28 0219 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2013 Oct 28 0141 UTC
Maximum Time: 2013 Oct 28 0203 UTC
End Time: 2013 Oct 28 0212 UTC
X-ray Class: X1.0
Optical Class: 2n
Location: N04W66
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: ALTXMF
Serial Number: 196
Issue Time: 2013 Oct 28 0159 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Oct 28 0158 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: SUMSUD
Serial Number: 181
Issue Time: 2013 Oct 26 2256 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2013 Oct 26 2246 UTC
Deviation: 10 nT
Station: Boulder


Space Weather Message Code: WARSUD
Serial Number: 139
Issue Time: 2013 Oct 26 2155 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2013 Oct 26 2230 UTC
Valid To: 2013 Oct 26 2330 UTC
IP Shock Passage Observed: 2013 Oct 26 2145 UTC


Space Weather Message Code: WATA20
Serial Number: 555
Issue Time: 2013 Oct 26 1457 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Oct 27: None (Below G1) Oct 28: G1 (Minor) Oct 29: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTTP2
Serial Number: 883
Issue Time: 2013 Oct 26 1005 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 26 0931 UTC
Estimated Velocity: 1275 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUM10R
Serial Number: 592
Issue Time: 2013 Oct 25 1605 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Oct 25 1457 UTC
Maximum Time: 2013 Oct 25 1514 UTC
End Time: 2013 Oct 25 1541 UTC
Duration: 44 minutes
Peak Flux: 370 sfu
Latest Penticton Noon Flux: 161 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: ALTTP2
Serial Number: 882
Issue Time: 2013 Oct 25 1537 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 25 1458 UTC
Estimated Velocity: 2078 km/s

Comment: Sagamore Hill reported a speed of 2078 km/s; San Vito reported a speed of 2105 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP4
Serial Number: 433
Issue Time: 2013 Oct 25 1532 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 25 1458 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: SUMX01
Serial Number: 89
Issue Time: 2013 Oct 25 1528 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2013 Oct 25 1451 UTC
Maximum Time: 2013 Oct 25 1503 UTC
End Time: 2013 Oct 25 1512 UTC
X-ray Class: X2.1
Location: S06E69
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: ALTXMF
Serial Number: 195
Issue Time: 2013 Oct 25 1457 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Oct 25 1456 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: ALTTP2
Serial Number: 881
Issue Time: 2013 Oct 25 1418 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 25 1336 UTC
Estimated Velocity: 1083 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUMX01
Serial Number: 88
Issue Time: 2013 Oct 25 0848 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2013 Oct 25 0753 UTC
Maximum Time: 2013 Oct 25 0801 UTC
End Time: 2013 Oct 25 0809 UTC
X-ray Class: X1.7
Location: S08E67
NOAA Scale: R3 - Strong

Comment: CORRECTION: This flare is attributed to Region 1882, not 1875 as earlier reported. No optical flare reported.
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: ALTTP2
Serial Number: 880
Issue Time: 2013 Oct 25 0847 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 25 0759 UTC
Estimated Velocity: 1240 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUM10R
Serial Number: 591
Issue Time: 2013 Oct 25 0836 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Oct 25 0757 UTC
Maximum Time: 2013 Oct 25 0758 UTC
End Time: 2013 Oct 25 0821 UTC
Duration: 24 minutes
Peak Flux: 610 sfu
Latest Penticton Noon Flux: 161 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: ALTTP4
Serial Number: 432
Issue Time: 2013 Oct 25 0821 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 25 0804 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: SUMX01
Serial Number: 87
Issue Time: 2013 Oct 25 0819 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2013 Oct 25 0753 UTC
Maximum Time: 2013 Oct 25 0801 UTC
End Time: 2013 Oct 25 0809 UTC
X-ray Class: X1.7
Location: N08W28
NOAA Scale: R3 - Strong

Comment: Location Approximate (vcnty Region 1875); no optical flare report received.
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.


Space Weather Message Code: ALTXMF
Serial Number: 194
Issue Time: 2013 Oct 25 0800 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Oct 25 0758 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: ALTTP2
Serial Number: 879
Issue Time: 2013 Oct 25 0339 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 25 0259 UTC
Estimated Velocity: 711 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP4
Serial Number: 431
Issue Time: 2013 Oct 25 0339 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 25 0259 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTTP4
Serial Number: 430
Issue Time: 2013 Oct 24 1158 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 24 1031 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTTP4
Serial Number: 429
Issue Time: 2013 Oct 24 0339 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 24 0056 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTTP2
Serial Number: 878
Issue Time: 2013 Oct 24 0226 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 24 0031 UTC
Estimated Velocity: 1321 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUMXM5
Serial Number: 105
Issue Time: 2013 Oct 24 0114 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2013 Oct 24 0021 UTC
Maximum Time: 2013 Oct 24 0030 UTC
End Time: 2013 Oct 24 0035 UTC
X-ray Class: M9.3
Optical Class: 1n
Location: S10E08
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.


Space Weather Message Code: ALTXMF
Serial Number: 193
Issue Time: 2013 Oct 24 0030 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2013 Oct 24 0026 UTC
NOAA Scale: R2 - Moderate
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/drap/index.html.


Space Weather Message Code: WATA20
Serial Number: 554
Issue Time: 2013 Oct 23 1901 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Oct 24: None (Below G1) Oct 25: G1 (Minor) Oct 26: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTTP2
Serial Number: 877
Issue Time: 2013 Oct 23 0145 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 22 2129 UTC
Estimated Velocity: 752 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP2
Serial Number: 876
Issue Time: 2013 Oct 22 2153 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 22 2122 UTC
Estimated Velocity: 1955 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUM10R
Serial Number: 590
Issue Time: 2013 Oct 22 2134 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Oct 22 2118 UTC
Maximum Time: 2013 Oct 22 2118 UTC
End Time: 2013 Oct 22 2119 UTC
Duration: 1 minutes
Peak Flux: 220 sfu
Latest Penticton Noon Flux: 146 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: ALTTP2
Serial Number: 875
Issue Time: 2013 Oct 22 1924 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 22 1848 UTC
Estimated Velocity: 785 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP2
Serial Number: 874
Issue Time: 2013 Oct 22 1408 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 22 1335 UTC
Estimated Velocity: 696 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTEF3
Serial Number: 2097
Issue Time: 2013 Oct 22 0501 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2096
Begin Time: 2013 Oct 17 0930 UTC
Yesterday Maximum 2MeV Flux: 3951 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2096
Issue Time: 2013 Oct 21 0535 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2095
Begin Time: 2013 Oct 17 0930 UTC
Yesterday Maximum 2MeV Flux: 2724 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2095
Issue Time: 2013 Oct 20 0500 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2094
Begin Time: 2013 Oct 17 0930 UTC
Yesterday Maximum 2MeV Flux: 3270 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2094
Issue Time: 2013 Oct 19 0501 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2093
Begin Time: 2013 Oct 17 0930 UTC
Yesterday Maximum 2MeV Flux: 3594 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2093
Issue Time: 2013 Oct 18 1136 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2092
Begin Time: 2013 Oct 17 0930 UTC
Yesterday Maximum 2MeV Flux: 5893 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTEF3
Serial Number: 2092
Issue Time: 2013 Oct 17 0943 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2013 Oct 17 0930 UTC
Station: GOES-13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTTP4
Serial Number: 428
Issue Time: 2013 Oct 16 0953 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 16 0930 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTTP2
Serial Number: 873
Issue Time: 2013 Oct 16 0953 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 16 0919 UTC
Estimated Velocity: 548 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTK04
Serial Number: 1676
Issue Time: 2013 Oct 16 0302 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Oct 16 0259 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2183
Issue Time: 2013 Oct 16 0224 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 16 0225 UTC
Valid To: 2013 Oct 16 0700 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2182
Issue Time: 2013 Oct 15 2133 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 15 2130 UTC
Valid To: 2013 Oct 16 0100 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARSUD
Serial Number: 138
Issue Time: 2013 Oct 15 0923 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2013 Oct 15 0925 UTC
Valid To: 2013 Oct 15 1025 UTC
IP Shock Passage Observed: 2013 Oct 15 0902 UTC


Space Weather Message Code: WARK04
Serial Number: 2181
Issue Time: 2013 Oct 15 0411 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 15 0410 UTC
Valid To: 2013 Oct 15 1300 UTC
Warning Condition: Persistence

Comment: Continuation of previous event. Previous warning mistakenly allowed to expire.
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTK04
Serial Number: 1675
Issue Time: 2013 Oct 14 2100 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Oct 14 2100 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2180
Issue Time: 2013 Oct 14 1855 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 14 1855 UTC
Valid To: 2013 Oct 15 0400 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTTP2
Serial Number: 872
Issue Time: 2013 Oct 13 0804 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 13 0711 UTC
Estimated Velocity: 688 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP2
Serial Number: 871
Issue Time: 2013 Oct 13 0151 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 13 0035 UTC
Estimated Velocity: 798 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTEF3
Serial Number: 2091
Issue Time: 2013 Oct 12 1536 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2013 Oct 12 1520 UTC
Station: GOES13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTTP4
Serial Number: 427
Issue Time: 2013 Oct 11 0823 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 11 0717 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: ALTTP2
Serial Number: 870
Issue Time: 2013 Oct 11 0809 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 11 0711 UTC
Estimated Velocity: 510 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: SUM10R
Serial Number: 589
Issue Time: 2013 Oct 11 0808 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2013 Oct 11 0725 UTC
Maximum Time: 2013 Oct 11 0725 UTC
End Time: 2013 Oct 11 0726 UTC
Duration: 1 minutes
Peak Flux: 380 sfu
Latest Penticton Noon Flux: 121 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.


Space Weather Message Code: WARK04
Serial Number: 2179
Issue Time: 2013 Oct 09 1827 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2178
Valid From: 2013 Oct 08 2027 UTC
Now Valid Until: 2013 Oct 10 0700 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2178
Issue Time: 2013 Oct 09 1219 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2177
Valid From: 2013 Oct 08 2027 UTC
Now Valid Until: 2013 Oct 09 1900 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK04
Serial Number: 2177
Issue Time: 2013 Oct 09 1217 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2176
Valid From: 2013 Oct 08 2027 UTC
Now Valid Until: 2013 Oct 08 1900 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTK05
Serial Number: 731
Issue Time: 2013 Oct 09 0815 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2013 Oct 09 0811 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK05
Serial Number: 876
Issue Time: 2013 Oct 09 0813 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Oct 09 0810 UTC
Valid To: 2013 Oct 09 1300 UTC
Warning Condition: Persistence
NOAA Scale: G1 - Minor

Comment: Continuation of current geomagnetic activity.
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTTP2
Serial Number: 869
Issue Time: 2013 Oct 09 0239 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 09 0145 UTC
Estimated Velocity: 791 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: ALTTP4
Serial Number: 426
Issue Time: 2013 Oct 09 0216 UTC

ALERT: Type IV Radio Emission
Begin Time: 2013 Oct 09 0155 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.


Space Weather Message Code: WARK04
Serial Number: 2176
Issue Time: 2013 Oct 08 2356 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2175
Valid From: 2013 Oct 08 2027 UTC
Now Valid Until: 2013 Oct 09 1300 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK05
Serial Number: 875
Issue Time: 2013 Oct 08 2356 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 874
Valid From: 2013 Oct 08 2030 UTC
Now Valid Until: 2013 Oct 09 0400 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK06
Serial Number: 233
Issue Time: 2013 Oct 08 2258 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2013 Oct 08 2257 UTC
Valid To: 2013 Oct 09 0300 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.


Space Weather Message Code: SUMSUD
Serial Number: 180
Issue Time: 2013 Oct 08 2036 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2013 Oct 08 2023 UTC
Deviation: 62 nT
Station: Boulder


Space Weather Message Code: ALTK04
Serial Number: 1674
Issue Time: 2013 Oct 08 2033 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2013 Oct 08 2023 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: ALTK05
Serial Number: 730
Issue Time: 2013 Oct 08 2033 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2013 Oct 08 2024 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK05
Serial Number: 874
Issue Time: 2013 Oct 08 2030 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Oct 08 2030 UTC
Valid To: 2013 Oct 08 2359 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 2175
Issue Time: 2013 Oct 08 2026 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 08 2027 UTC
Valid To: 2013 Oct 08 2359 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARSUD
Serial Number: 137
Issue Time: 2013 Oct 08 1953 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2013 Oct 08 2020 UTC
Valid To: 2013 Oct 08 2050 UTC
IP Shock Passage Observed: 2013 Oct 08 1942 UTC


Space Weather Message Code: ALTTP2
Serial Number: 868
Issue Time: 2013 Oct 05 1103 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Oct 05 0652 UTC
Estimated Velocity: 699 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.


Space Weather Message Code: WATA20
Serial Number: 553
Issue Time: 2013 Oct 03 0854 UTC

CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
Cancel Serial Number: 552
Original Issue Time: 2013 Oct 02 1724 UTC

Comment: WATCH CANCELED: Geomagnetic Storm Reaching G1 for 03 October No Longer Predicted
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARPX1
Serial Number: 404
Issue Time: 2013 Oct 02 1943 UTC

CANCEL WARNING: Proton 10MeV Integral Flux above 10pfu expected
Cancel Serial Number: 403
Original Issue Time: 2013 Sep 30 0446 UTC

Comment: Summaries have been issued for the S1 and S2 NOAA Scale proton events. This warning is no longer valid. The GOES-13, 10MeV proton flux value at 02/1925 UTC was 4.7 pfu.
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: SUMPX1
Serial Number: 70
Issue Time: 2013 Oct 02 1923 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2013 Sep 30 0505 UTC
Maximum Time: 2013 Sep 30 2005 UTC
End Time: 2013 Oct 02 0510 UTC
Maximum 10MeV Flux: 182 pfu
NOAA Scale: S1 - Minor


Space Weather Message Code: SUMPX2
Serial Number: 35
Issue Time: 2013 Oct 02 1921 UTC

SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2013 Sep 30 1420 UTC
Maximum Time: 2013 Sep 30 2005 UTC
End Time: 2013 Oct 01 1715 UTC
Maximum 10MeV Flux: 182 pfu
NOAA Scale: S2 - Moderate


Space Weather Message Code: WARK05
Serial Number: 873
Issue Time: 2013 Oct 02 1754 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 872
Valid From: 2013 Oct 02 0200 UTC
Now Valid Until: 2013 Oct 03 0600 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 2174
Issue Time: 2013 Oct 02 1753 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2173
Valid From: 2013 Oct 02 0150 UTC
Now Valid Until: 2013 Oct 03 1300 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WATA20
Serial Number: 552
Issue Time: 2013 Oct 02 1724 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Oct 03: G1 (Minor) Oct 04: None (Below G1) Oct 05: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 2173
Issue Time: 2013 Oct 02 1528 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2172
Valid From: 2013 Oct 02 0150 UTC
Now Valid Until: 2013 Oct 03 0000 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARK05
Serial Number: 872
Issue Time: 2013 Oct 02 1222 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 871
Valid From: 2013 Oct 02 0200 UTC
Now Valid Until: 2013 Oct 02 1800 UTC
Warning Condition: Persistence
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: ALTK06
Serial Number: 313
Issue Time: 2013 Oct 02 0458 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Oct 02 0454 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.


Space Weather Message Code: WARK06
Serial Number: 232
Issue Time: 2013 Oct 02 0359 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2013 Oct 02 0400 UTC
Valid To: 2013 Oct 02 1300 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.


Space Weather Message Code: SUMSUD
Serial Number: 179
Issue Time: 2013 Oct 02 0212 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2013 Oct 02 0158 UTC
Deviation: 72 nT
Station: BOU


Space Weather Message Code: ALTK05
Serial Number: 729
Issue Time: 2013 Oct 02 0203 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2013 Oct 02 0200 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK05
Serial Number: 871
Issue Time: 2013 Oct 02 0200 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2013 Oct 02 0200 UTC
Valid To: 2013 Oct 02 1300 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.


Space Weather Message Code: WARK04
Serial Number: 2172
Issue Time: 2013 Oct 02 0150 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2013 Oct 02 0150 UTC
Valid To: 2013 Oct 02 1600 UTC
Warning Condition: Onset
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.


Space Weather Message Code: WARSUD
Serial Number: 136
Issue Time: 2013 Oct 02 0126 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2013 Oct 02 0150 UTC
Valid To: 2013 Oct 02 0250 UTC
IP Shock Passage Observed: 2013 Oct 02 0120 UTC


Space Weather Message Code: WARPX1
Serial Number: 403
Issue Time: 2013 Oct 01 2123 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 402
Valid From: 2013 Sep 30 0500 UTC
Now Valid Until: 2013 Oct 02 2200 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.


Space Weather Message Code: WATA30
Serial Number: 108
Issue Time: 2013 Oct 01 1330 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Oct 02: G1 (Minor) Oct 03: G2 (Moderate) Oct 04: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.