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Space Weather Alerts

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Alerts Issued in August 2014


Space Weather Message Code: ALTEF3
Serial Number: 2114
Issue Time: 2014 Aug 30 1350 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2014 Aug 30 1335 UTC
Station: GOES13
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: WARK04
Serial Number: 2307
Issue Time: 2014 Aug 30 1241 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2306
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 31 1400 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: 2306
Issue Time: 2014 Aug 30 0628 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2305
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 30 1400 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: 2305
Issue Time: 2014 Aug 29 1355 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2304
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 30 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: ALTK05
Serial Number: 750
Issue Time: 2014 Aug 29 1202 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2014 Aug 29 1200 UTC
Synoptic Period: 0900-1200 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: 910
Issue Time: 2014 Aug 29 1050 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2014 Aug 29 1050 UTC
Valid To: 2014 Aug 29 1400 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: 2304
Issue Time: 2014 Aug 29 0607 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2303
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 29 1400 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: 2303
Issue Time: 2014 Aug 28 1857 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2302
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 29 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: WARK05
Serial Number: 909
Issue Time: 2014 Aug 28 1020 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2014 Aug 28 1018 UTC
Valid To: 2014 Aug 28 1600 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: 2302
Issue Time: 2014 Aug 28 1020 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2301
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 28 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: 749
Issue Time: 2014 Aug 28 0540 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2014 Aug 28 0540 UTC
Synoptic Period: 0300-0600 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: 908
Issue Time: 2014 Aug 28 0355 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 907
Valid From: 2014 Aug 27 0715 UTC
Now Valid Until: 2014 Aug 28 1000 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: 2301
Issue Time: 2014 Aug 28 0355 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2300
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 28 1400 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: 907
Issue Time: 2014 Aug 27 2155 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 906
Valid From: 2014 Aug 27 0715 UTC
Now Valid Until: 2014 Aug 28 0400 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: WARK05
Serial Number: 906
Issue Time: 2014 Aug 27 1726 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 905
Valid From: 2014 Aug 27 0715 UTC
Now Valid Until: 2014 Aug 27 2300 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: WARK04
Serial Number: 2300
Issue Time: 2014 Aug 27 1724 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2299
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 28 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: WATA30
Serial Number: 113
Issue Time: 2014 Aug 27 1242 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Aug 28: G2 (Moderate) Aug 29: None (Below G1) Aug 30: 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.


Space Weather Message Code: WARK05
Serial Number: 905
Issue Time: 2014 Aug 27 1227 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 904
Valid From: 2014 Aug 27 0715 UTC
Now Valid Until: 2014 Aug 27 1800 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: ALTK04
Serial Number: 1721
Issue Time: 2014 Aug 27 0744 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 Aug 27 0744 UTC
Synoptic Period: 0600-0900 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: 2299
Issue Time: 2014 Aug 27 0713 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2298
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Aug 27 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: WARK05
Serial Number: 904
Issue Time: 2014 Aug 27 0712 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2014 Aug 27 0715 UTC
Valid To: 2014 Aug 27 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: 2298
Issue Time: 2014 Aug 27 0314 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 27 0330 UTC
Valid To: 2014 Aug 27 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: WATA20
Serial Number: 580
Issue Time: 2014 Aug 25 1754 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Aug 26: None (Below G1) Aug 27: G1 (Minor) Aug 28: 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: ALTTP4
Serial Number: 473
Issue Time: 2014 Aug 25 1539 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Aug 25 1518 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: 955
Issue Time: 2014 Aug 25 1538 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 25 1508 UTC
Estimated Velocity: 707 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: 625
Issue Time: 2014 Aug 25 1530 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2014 Aug 25 1458 UTC
Maximum Time: 2014 Aug 25 1501 UTC
End Time: 2014 Aug 25 1503 UTC
Duration: 5 minutes
Peak Flux: 170 sfu
Latest Penticton Noon Flux: 141 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: SUMXM5
Serial Number: 119
Issue Time: 2014 Aug 24 1256 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2014 Aug 24 1200 UTC
Maximum Time: 2014 Aug 24 1217 UTC
End Time: 2014 Aug 24 1225 UTC
X-ray Class: M5.9
Optical Class: 2b
Location: S07E77
NOAA Scale: R2 - Moderate

Comment: Impulsive M5/2b flare from new Region 2151 near the SE limb. Type II (593 km/s) and Tenflare (409 sfu) radio emissions associated with this event.
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: ALTTP2
Serial Number: 954
Issue Time: 2014 Aug 24 1249 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 24 1214 UTC
Estimated Velocity: 593 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: 624
Issue Time: 2014 Aug 24 1249 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2014 Aug 24 1209 UTC
Maximum Time: 2014 Aug 24 1210 UTC
End Time: 2014 Aug 24 1216 UTC
Duration: 7 minutes
Peak Flux: 409 sfu
Latest Penticton Noon Flux: 132 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: ALTXMF
Serial Number: 225
Issue Time: 2014 Aug 24 1217 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2014 Aug 24 1216 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: ALTTP4
Serial Number: 472
Issue Time: 2014 Aug 24 0527 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Aug 24 0121 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: 953
Issue Time: 2014 Aug 24 0146 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 24 0015 UTC
Estimated Velocity: 471 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: 952
Issue Time: 2014 Aug 22 1641 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 22 1544 UTC
Estimated Velocity: 449 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: 471
Issue Time: 2014 Aug 22 1102 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Aug 22 1033 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: 951
Issue Time: 2014 Aug 22 1101 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 22 1017 UTC
Estimated Velocity: 465 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: 950
Issue Time: 2014 Aug 22 0940 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 22 0009 UTC
Estimated Velocity: 578 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: 470
Issue Time: 2014 Aug 22 0036 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Aug 22 0002 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: 2297
Issue Time: 2014 Aug 21 1944 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 21 1941 UTC
Valid To: 2014 Aug 22 0500 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: 2296
Issue Time: 2014 Aug 21 0655 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2295
Valid From: 2014 Aug 21 0145 UTC
Now Valid Until: 2014 Aug 21 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: WARK04
Serial Number: 2295
Issue Time: 2014 Aug 21 0146 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 21 0145 UTC
Valid To: 2014 Aug 21 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: 2294
Issue Time: 2014 Aug 20 0754 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2293
Valid From: 2014 Aug 19 0715 UTC
Now Valid Until: 2014 Aug 20 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: ALTK06
Serial Number: 324
Issue Time: 2014 Aug 19 2306 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2014 Aug 19 2301 UTC
Synoptic Period: 2100-2400 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: WATA30
Serial Number: 112
Issue Time: 2014 Aug 19 2151 UTC

WATCH: Geomagnetic Storm Category G2 Predicted
Highest Storm Level Predicted by Day:
Aug 20: G2 (Moderate) Aug 21: None (Below G1) Aug 22: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: This watch supercedes all previous watches.
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: 244
Issue Time: 2014 Aug 19 2149 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2014 Aug 19 2146 UTC
Valid To: 2014 Aug 20 0500 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: ALTK05
Serial Number: 748
Issue Time: 2014 Aug 19 2141 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2014 Aug 19 2136 UTC
Synoptic Period: 2100-2400 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: 903
Issue Time: 2014 Aug 19 2135 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2014 Aug 19 2135 UTC
Valid To: 2014 Aug 20 0700 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: ALTK04
Serial Number: 1720
Issue Time: 2014 Aug 19 2056 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 Aug 19 2051 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: 2293
Issue Time: 2014 Aug 19 1817 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2292
Valid From: 2014 Aug 19 0715 UTC
Now Valid Until: 2014 Aug 20 0800 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: SUMSUD
Serial Number: 196
Issue Time: 2014 Aug 19 0713 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2014 Aug 19 0700 UTC
Deviation: 12 nT
Station: BOU


Space Weather Message Code: WARK04
Serial Number: 2292
Issue Time: 2014 Aug 19 0658 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 19 0715 UTC
Valid To: 2014 Aug 19 1915 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: 154
Issue Time: 2014 Aug 19 0615 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2014 Aug 19 0650 UTC
Valid To: 2014 Aug 19 0750 UTC
IP Shock Passage Observed: 2014 Aug 19 0558 UTC


Space Weather Message Code: WATA20
Serial Number: 579
Issue Time: 2014 Aug 18 1954 UTC

WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Aug 19: None (Below G1) Aug 20: G1 (Minor) Aug 21: 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: 2291
Issue Time: 2014 Aug 18 0613 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 18 0615 UTC
Valid To: 2014 Aug 18 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: ALTTP2
Serial Number: 949
Issue Time: 2014 Aug 14 0449 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 14 0402 UTC
Estimated Velocity: 802 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: 1719
Issue Time: 2014 Aug 12 2039 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 Aug 12 2034 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: 2290
Issue Time: 2014 Aug 12 1619 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 12 1700 UTC
Valid To: 2014 Aug 13 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: WARK04
Serial Number: 2289
Issue Time: 2014 Aug 11 2356 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 11 2355 UTC
Valid To: 2014 Aug 12 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: ALTK04
Serial Number: 1718
Issue Time: 2014 Aug 10 2025 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 Aug 10 2024 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: 2288
Issue Time: 2014 Aug 10 2022 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 10 2021 UTC
Valid To: 2014 Aug 11 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: WARK04
Serial Number: 2287
Issue Time: 2014 Aug 08 0324 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 08 0325 UTC
Valid To: 2014 Aug 08 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: 2286
Issue Time: 2014 Aug 05 1904 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 05 1905 UTC
Valid To: 2014 Aug 06 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: ALTTP4
Serial Number: 469
Issue Time: 2014 Aug 05 1656 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Aug 05 1627 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: 948
Issue Time: 2014 Aug 05 1633 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 05 1554 UTC
Estimated Velocity: 1339 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: WARK04
Serial Number: 2285
Issue Time: 2014 Aug 03 0255 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2284
Valid From: 2014 Aug 02 1411 UTC
Now Valid Until: 2014 Aug 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: WARK04
Serial Number: 2284
Issue Time: 2014 Aug 02 1857 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2283
Valid From: 2014 Aug 02 1411 UTC
Now Valid Until: 2014 Aug 03 0300 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: ALTK04
Serial Number: 1717
Issue Time: 2014 Aug 02 1415 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 Aug 02 1415 UTC
Synoptic Period: 1200-1500 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: 2283
Issue Time: 2014 Aug 02 1411 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 02 1411 UTC
Valid To: 2014 Aug 02 1900 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: ALTK04
Serial Number: 1716
Issue Time: 2014 Aug 02 0005 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 Aug 02 0000 UTC
Synoptic Period: 2100-2400 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: 2282
Issue Time: 2014 Aug 02 0004 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 Aug 01 2359 UTC
Valid To: 2014 Aug 02 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: ALTTP4
Serial Number: 468
Issue Time: 2014 Aug 01 1901 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Aug 01 1818 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: 947
Issue Time: 2014 Aug 01 1900 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Aug 01 1818 UTC
Estimated Velocity: 563 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: 623
Issue Time: 2014 Aug 01 1506 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2014 Aug 01 1447 UTC
Maximum Time: 2014 Aug 01 1447 UTC
End Time: 2014 Aug 01 1448 UTC
Duration: 1 minutes
Peak Flux: 340 sfu
Latest Penticton Noon Flux: 156 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.