INFO FROM SIDC - RWC BELGIUM 2015 Apr 16 12:30:00 UTC
The strongest flare reported during last 24 hours was the C7.8 flare, peaking at 20:23 UT on April 15. The flare originated from, still the most complex region visible on the solar disc, NOAA AR 2321 (altogether Catania sunspot groups 29, 30 and 31). We expect C-class flares and possibly also an isolated M-class flare, in particular from NOAA ARs 2321, 2324, and 2325. No Earth directed CMEs were observed during last 24 hours. The Earth is inside the fast solar wind with the speed of about 620 km/s. The interplanetary magnetic field magnitude has decreased and its present value is about 7nT. During the last 24 hours the Bz component of the interplaneta y magnetic field had a few longer intervals of negative value (mostly about - 6 nT, with minimum reported value of about -12nT) which induced minor storm geomagnetic conditions (local station at Dourbes and IZMIRAN reported K=5; NOAA reported Kp= 5). CME of April 12 might arrive at the Earth today. We expect active to possibly minor storm geomagnetic conditions in the coming hours.