Space Weather Message Code: WATA50
Serial Number: 50
Issue Time: 2014 Sep 11 0459 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Sep 12: G2 (Moderate) Sep 13: G3 (Strong) Sep 14: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: Upgrading the Watch for 13-14 Sep due to anticipated effects from the CME associated with yesterday’s R3 (Strong) event.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/NOAAscales
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
bttt
So, strongest effects from this solar flare are now anticipated on Saturday instead of tomorrow, but effects will be spread out from tomorrow until Sunday? Isn’t this a little unusual? It has something to do with the smaller flare that occurred beforehand, I’d imagine.