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 December 2009


Space Weather Message Code: WARSUD
Serial Number: 67
Issue Time: 2009 Dec 25 1619 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2009 Dec 25 1710 UTC
Valid To: 2009 Dec 25 1810 UTC
IP Shock Passage Observed: 2009 Dec 25 1550 UTC


Space Weather Message Code: ALTTP2
Serial Number: 693
Issue Time: 2009 Dec 22 0533 UTC

ALERT: Type II Radio Emission
Begin Time: 2009 Dec 22 0457 UTC
Estimated Velocity: 531 km/s


Space Weather Message Code: ALTTP4
Serial Number: 315
Issue Time: 2009 Dec 17 1556 UTC

ALERT: Type IV Radio Emission
Begin Time: 2009 Dec 16 2212 UTC