ALERT: Geomagnetic K-index of 4

Space Weather Message Code: ALTK04

Serial Number: 1435

Issue Time: 2010 Mar 12 0521 UTC

ALERT: Geomagnetic K-index of 4

Threshold Reached: 2010 Mar 12 0521 UTC

Synoptic Period: 0300-0600 UTC

Station: Boulder

Active Warning: Yes