Friday, September 07, 2012
M1 Flare on Sept 6th From AR 1560...
The above image was taken September 6th at 04:13:00 UTC by the Atmospheric Imaging Assembly (AIA), at 94 Angstroms, aboard the Solar Dynamics Observatory (SDO). This was the time of the M1 x-ray flare produced by Active Region 1560 (AR 1560). Image Credit: SDO/AIA
For the end of September 5th and most of the 6th, the solar activity was moderate (Wow. Not "low" or "very low"...). Active Region 1560 (AR 1560) produced an impulsive M1 x-ray flare on the 6th at 04:13 UTC, as well as occasional low-level C-class solar flares. No obvious changes were noted in AR 1560, but its closeness to the limb hampered any analysis. AR 1564 also produced occasional low-level C-class flares. It showed minor sunspot and penumbral growth in its interior portion. AR 1562 showed gradual spot and penumbral growth during the period. No new regions were designated. And no Earth-directed coronal mass ejection (CME) activity occurred during the period. The forecast through September 9th: The solar activity is expected to be low with a chance for an isolated M-class flare on the 7th. This will drop to a slight chance for the 8th and 9th.
Earth's geomagnetic field activity ranged from quiet to active levels. Active levels occurred on the 6th during 00:00 UTC to 03:00 UTC due to periods of southward IMF Bz and enhanced IMF Bt associated with a solar sector boundary change. Field activity decreased to mostly quiet levels after 03:00 UTC. The forecast through September 9th: The geomagnetic field activity is expected to be at quiet levels with a chance for unsettled levels. Stay tuned...
To monitor solar flare activity minute by minute, visit the "Today's Space Weather" page of NOAA's Space Weather Prediction Center (www.swpc.noaa.gov/today.html).
To learn more about the sun and to stay current on solar activity, visit the mission home pages of the Solar Dynamics Observatory (SDO) (sdo.gsfc.nasa.gov), the Solar and Heliospheric Observatory (SOHO) (sohowww.nascom.nasa.gov), the Advanced Composition Explorer (ACE) (www.srl.caltech.edu/ACE), and the Solar Terrestrial Relations Observatory (STEREO) (stereo.gsfc.nasa.gov).