NOAA / Space Weather Prediction Center

Mass Ejection graphic

Space Weather Alerts
Alerts/Displays - Archive - Email Registration - Help/Samples

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

Alerts Issued in January 2009

Space Weather Message Code: SUMSUD
Serial Number: 90
Issue Time: 2009 Jan 14 0127 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2009 Jan 14 0121 UTC
Deviation: 13 nT
Station: Boulder

Space Weather Message Code: ALTK04
Serial Number: 1398
Issue Time: 2009 Jan 03 0931 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2009 Jan 03 0926 UTC
Synoptic Period: 0900-1200 UTC
Station: Boulder
Active Warning: no