NOAA / Space Weather Prediction Center

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Space Weather Alerts

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Alerts in Graphical Timelines: Past 7 days and Currently in Effect
Alerts in Text Format: Current month and Previous month

Alerts Issued in September 2009


Space Weather Message Code: ALTK05
Serial Number: 631
Issue Time: 2009 Sep 28 0814 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2009 Sep 28 0810 UTC
Synoptic Period: 0600-0900 UTC
Station: Boulder
Active Warning: No
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK04
Serial Number: 1423
Issue Time: 2009 Sep 28 0749 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2009 Sep 28 0745 UTC
Synoptic Period: 0600-0900 UTC
Station: Boulder
Active Warning: No


Space Weather Message Code: ALTK04
Serial Number: 1422
Issue Time: 2009 Sep 27 1036 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2009 Sep 27 1035 UTC
Synoptic Period: 0900-1200 UTC
Station: Boulder
Active Warning: No