There were six C flares and one M flare on the Sun during the past 24 hours, released by NOAA AR 11996 and 12003. The M1.2 flare was produced by NOAA AR 11996 and peaked at 19:19 UT on March 13. In the next 48 hours, the probability for C flares is very high (above 90%) and for M flares around 50%, mainly from NOAA AR 11996. An X flare is possible but unlikely. LASCO C2 imagery featured a CME starting at 10:00 UT on March 14 in the northeast to southeast. The same CME was spotted on COR2 A and COR2 B images in the northwest to southwest. This CME is most probably associated to a backside
filament eruption, which was observed in EUVI B at about 9:36 UT. Hence, this CME will not be geoeffective.In the past 24 hours, solar wind speed as observed by ACE further rose from about 350 km/s to a plateau of about 520 km/s, while the magnitude of the Interplanetary Magnetic Field (IMF) varied
between 2 and 10 nT. This is probably the effect of a southern coronal hole high speed stream. A small coronal hole at about 30N passed the central meridian on March 13. It may influence the geomagnetic field on March 17 and 18. In the past 24 hours, quiet geomagnetic levels were registered (K Dourbes between 0 and 2; NOAA Kp between 1 and 3). Quiet to active geomagnetic conditions (K Dourbes < 5) are expected on March 14 under the influence of the high speed stream. Quiet conditions (K Dourbes < 4) are likely on March 15 and 16.
Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Time UT: 14:00
Exposure 1/500 sec.
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