Space Weather WATCH in effect until 9/14, Possible G3 Storm to impact Earth

SDO AIA 304 image of sun on 9/11/14

SDO AIA 304 image of sun on 9/11/14

NOAA put a Space Weather Watch in effect until 9/14 due to the combined effects of two separate solar events.  The combination of a CME along with an R3 event have them predicting a possible G3 (Strong) storm on September 13th,

Highest Storm Level Predicted by Day:
Sep 12:  G2 (Moderate)
Sep 13:  G3 (Strong)
Sep 14:  G1 (Minor)

Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Possible impacts of this event include:

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.

NOAA Space Weather Scales (meaning of R1, S1, Etc.) can be found at
For more detailed current Space Weather visit KnowledgeOrb Space Weather at

Aurora viewing updates can be seen on the KnowledgeOrb Aurora viewing page.

About the author

Recipient of many prestigious NASA Awards including the Exceptional Public Service Medal and the Robert H. Goddard award. Experience includes working for NASA, as a contractor, in satellite design, construction and operations. Expert in the satellite operations concepts and ground systems including command, control, and science data processing.