Space Weather Alert, Type II Radio Emissions, possible CME

Space Weather Alert

ALERT: Type II Radio Emission
Begin Time: 2014 Dec 17 0449 UTC
Estimated Velocity: 910 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.

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

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

2014 Dec 17 0310 UTC
Solar-terrestrial indices for 16 December follow.
Solar flux 185 and estimated planetary A-index 8.
The estimated planetary K-index at 0300 UTC on 17 December was 3.

Space weather for the past 24 hours has been minor.
Radio blackouts reaching the R1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Radio blackouts reaching the R1 level are likely.

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.