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 April 2009

Space Weather Message Code: ALTEF3
Serial Number: 1642
Issue Time: 2009 Apr 14 1256 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2009 Apr 14 1235 UTC
Station: GOES11
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 3020 pfu

Space Weather Message Code: ALTEF3
Serial Number: 1641
Issue Time: 2009 Apr 13 1041 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2009 Apr 13 1025 UTC
Station: GOES11
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 6110 pfu

Space Weather Message Code: ALTEF3
Serial Number: 1640
Issue Time: 2009 Apr 12 1215 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2009 Apr 12 0900 UTC
Station: GOES11
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 2580 pfu

Space Weather Message Code: ALTEF3
Serial Number: 1639
Issue Time: 2009 Apr 11 1556 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2009 Apr 11 1540 UTC
Station: GOES11
Observed Yesterday: No

Space Weather Message Code: WARK04
Serial Number: 1587
Issue Time: 2009 Apr 11 0146 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2009 Apr 11 0147 UTC
Valid To: 2009 Apr 11 1600 UTC
Warning Condition: Persistence

Space Weather Message Code: ALTK04
Serial Number: 1409
Issue Time: 2009 Apr 11 0135 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2009 Apr 11 0128 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes