The Sun Online and solar activity. April 11, 2014

Solar activity has risen significantly during the past 24 hours and seven C-class flares were produced.
Most of the flares were originating from the East limb near 15 degrees south. At that latitude, several regions are turning onto the visible side of the solar disk, including Catania sunspot region 24 (NOAA AR 2035). The strongest flare was a C9.4 flare peaking at 11:24 UT on April 11 from sunspot region 24.
Further analysis will be needed to determine whether other solar phenomena were associated with this event. The slow partial halo CME with first measurement in LASCO at 0h48 UT of April 10, at most a shock can be expected to arrive. More C-class flares are expected from the active regions that are currently rotating around the East limb. M-class flares are also likely during the next 48 hours. An X-class flare is not excluded, but is not likely. Interplanetary magnetic field measured by ACE currently is variable with a magnitude ranging from 0 to 9 nT and a Bz fluctuating between -5 and +5 nT. Bz is currently negative, resulting in unsettled local geomagnetic conditions (local K=3 at Dourbes). Solar wind speed is around 380 km/s. Magnetic conditions are expected to be quiet to unsettled. At the arrival of the CH high speed stream (from April 12 on) active conditions might be observed.

Equipment: Coronado 90 +  Imaging Source DMK  + LX75
Processing: Photoshop, Avistack 300 frames
Date: 04/11/14
Time UT: 14:00
Exposure 1/500 sec.

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