NOAA / Space Weather Prediction Center

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Space Weather Alerts

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Alerts Issued in September 2014


Space Weather Message Code: ALTTP4
Serial Number: 474
Issue Time: 2014 Sep 01 2340 UTC

ALERT: Type IV Radio Emission
Begin Time: 2014 Sep 01 2250 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: 957
Issue Time: 2014 Sep 01 2339 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Sep 01 2211 UTC
Estimated Velocity: 1904 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: 2309
Issue Time: 2014 Sep 01 1356 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 2308
Valid From: 2014 Aug 27 0330 UTC
Now Valid Until: 2014 Sep 02 0100 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: ALTEF3
Serial Number: 2116
Issue Time: 2014 Sep 01 1240 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 2115
Begin Time: 2014 Aug 30 1335 UTC
Yesterday Maximum 2MeV Flux: 1342 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.


Space Weather Message Code: ALTTP2
Serial Number: 956
Issue Time: 2014 Sep 01 1139 UTC

ALERT: Type II Radio Emission
Begin Time: 2014 Sep 01 1113 UTC
Estimated Velocity: 2079 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.