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Alerts Issued in May 2014


Space Weather Message Code: ALTK04
Serial Number: 1713
Issue Time: 2014 May 30 1913 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 May 30 1912 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: 2268
Issue Time: 2014 May 30 1906 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 30 1905 UTC
Valid To: 2014 May 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: ALTTP2
Serial Number: 933
Issue Time: 2014 May 29 0924 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 May 29 0851 UTC
Estimated Velocity: 656 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: 460
Issue Time: 2014 May 27 1530 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 May 27 1441 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: 932
Issue Time: 2014 May 27 1528 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 May 27 1435 UTC
Estimated Velocity: 624 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: 618
Issue Time: 2014 May 24 1849 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2014 May 24 1829 UTC
Maximum Time: 2014 May 24 1830 UTC
End Time: 2014 May 24 1832 UTC
Duration: 3 minutes
Peak Flux: 229 sfu
Latest Penticton Noon Flux: 116 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: WARK05
Serial Number: 899
Issue Time: 2014 May 24 0159 UTC

CANCEL WARNING: Geomagnetic K-index of 5 expected
Cancel Serial Number: 898
Original Issue Time: 2014 May 23 2236 UTC

Comment: Conditions for this warning no longer exist.
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: ALTK05
Serial Number: 745
Issue Time: 2014 May 24 0159 UTC

CANCEL ALERT: Geomagnetic K-index of 5
Cancel Serial Number: 744
Original Issue Time: 2014 May 23 2247 UTC

Comment: Conditions for this alert no longer exist
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: ALTK05
Serial Number: 744
Issue Time: 2014 May 23 2247 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2014 May 23 2241 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor

Comment: *********CORRECTION*********
Threshold Reached at 23/2241 UTC
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: ALTK05
Serial Number: 743
Issue Time: 2014 May 23 2241 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2014 May 23 2341 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: 898
Issue Time: 2014 May 23 2236 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2014 May 23 2235 UTC
Valid To: 2014 May 24 0400 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: 2267
Issue Time: 2014 May 23 2211 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2266
Valid From: 2014 May 23 1605 UTC
Now Valid Until: 2014 May 24 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: ALTK04
Serial Number: 1712
Issue Time: 2014 May 23 1722 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 May 23 1721 UTC
Synoptic Period: 1500-1800 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: 2266
Issue Time: 2014 May 23 1606 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 23 1605 UTC
Valid To: 2014 May 23 2300 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: 2265
Issue Time: 2014 May 22 2255 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2264
Valid From: 2014 May 22 1548 UTC
Now Valid Until: 2014 May 23 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: 2264
Issue Time: 2014 May 22 1549 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 22 1548 UTC
Valid To: 2014 May 22 2300 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: 931
Issue Time: 2014 May 15 2223 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 May 15 2028 UTC
Estimated Velocity: 878 km/s

Comment: Weak intensity, associated with E. limb event.
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: 1711
Issue Time: 2014 May 11 0129 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 May 11 0128 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: 2263
Issue Time: 2014 May 11 0123 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 11 0122 UTC
Valid To: 2014 May 11 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: 930
Issue Time: 2014 May 10 1050 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 May 10 0950 UTC
Estimated Velocity: 960 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: 2262
Issue Time: 2014 May 10 0446 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 10 0445 UTC
Valid To: 2014 May 10 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: 459
Issue Time: 2014 May 09 0421 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 May 09 0236 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: 929
Issue Time: 2014 May 09 0420 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 May 09 0221 UTC
Estimated Velocity: 960 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: 1710
Issue Time: 2014 May 08 1750 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 May 08 1750 UTC
Synoptic Period: 1500-1800 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: 2261
Issue Time: 2014 May 08 1736 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 08 1735 UTC
Valid To: 2014 May 09 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: SUM10R
Serial Number: 617
Issue Time: 2014 May 08 1029 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2014 May 08 1000 UTC
Maximum Time: 2014 May 08 1002 UTC
End Time: 2014 May 08 1008 UTC
Duration: 8 minutes
Peak Flux: 390 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: SUMXM5
Serial Number: 117
Issue Time: 2014 May 08 1029 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2014 May 08 0920 UTC
Maximum Time: 2014 May 08 1007 UTC
End Time: 2014 May 08 1018 UTC
X-ray Class: M5.2
Optical Class: 2b
Location: N08E54
NOAA Scale: R2 - Moderate

Comment: Flare was from Region 2056.
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: 220
Issue Time: 2014 May 08 1007 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2014 May 08 1006 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: ALTK04
Serial Number: 1709
Issue Time: 2014 May 08 0500 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 May 08 0456 UTC
Synoptic Period: 0300-0600 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: 2260
Issue Time: 2014 May 08 0403 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 08 0415 UTC
Valid To: 2014 May 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: ALTK04
Serial Number: 1708
Issue Time: 2014 May 04 0434 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2014 May 04 0430 UTC
Synoptic Period: 0300-0600 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: 2259
Issue Time: 2014 May 04 0423 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2014 May 04 0422 UTC
Valid To: 2014 May 04 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.