A S3-Strong Solar Radiation Storm is in Progress
View report for this event here:
Issue Time: 2012 Mar 07 1417 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfuBegin Time: 2012 Mar 07 1410 UTC
NOAA Scale: S3 - Strong
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels.
Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely.
Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation.
Update 17:40 UTC March 9, 2012:
This Solar Proton Event continues into today
Issue Time: 2012 Mar 09 1740 UTC
EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 57
Valid From: 2012 Mar 07 0300 UTC
Now Valid Until: 2012 Mar 10 1200 UTC
Warning Condition: Persistence
Starting at around 04:29 UTC today, We had a CME arrival. This CME was caused by a filament that became unstable on March 4th and was ejected from the solar surface.
View report for this event here:
A Kp6 (moderate G2) geomagnetic storm was reached today around 08:52 UTC. This G3 storm has now subsided to the current conditions of of a G1 storm.
There was also another CME that occurred on March 4th that could have combined with the filament and arrived at the same time. We will monitor solar conditions today and report on any changes that are seen.
Issue Time: 2012 Mar 07 1454 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2012 Mar 07 1448 UTC
Synoptic Period: 1200-1500 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