Space Weather Alert – Type II Radio Emission 12/7/13

Space_Alert2
UPDATE – Issue Time: 2013 Dec 08 0224 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2013 Dec 08 0217 UTC
Synoptic Period: 0000-0300 UTC

Active Warning: Yes
NOAA Scale: G2 – Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents – Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft – Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio – HF (high frequency) radio propagation can fade at higher latitudes.
Aurora – Aurora may be seen as low as New York to Wisconsin to Washington state.
Issue Time: 2013 Dec 07 0812 UTC

ALERT: Type II Radio Emission
Begin Time: 2013 Dec 07 0723 UTC
Estimated Velocity: 691 km/s

Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

NOAA Space Weather Scales (meaning of R1,
S1, Etc.) can be found at http://www.knowledgeorb.com/current-space-weather/noaa-space-weather-scales/
For more detailed current Space Weather visit KnowledgeOrb Space Weather at http://www.knowledgeorb.com/current-space-weather/
Aurora viewing updates can be seen on the KnowledgeOrb Aurora viewing page. http://www.knowledgeorb.com/current-aurora-borealis-activity-viewing/

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.