:Issued: 2010 Feb 19 1257 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 00219 SIDC SOLAR BULLETIN 19 Feb 2010, 1243UT SIDC FORECAST (valid from 1230UT, 19 Feb 2010 until 21 Feb 2010) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 19 Feb 2010 10CM FLUX: 086 / AP: 003 PREDICTIONS FOR 20 Feb 2010 10CM FLUX: 087 / AP: 004 PREDICTIONS FOR 21 Feb 2010 10CM FLUX: 086 / AP: 001 COMMENT: No major flares were observed since 14 February. An isolated C- flare from NOAA 1049 is possible. The solar wind speed has been increasing during the last 48h. It is now at 500 km/s. The magnetic filed has been fluctuating but the effect on the geomagnetic conditions was minimal. Short unsettled periods are possible for the coming days also. TODAY'S ESTIMATED ISN : 013, BASED ON 04 STATIONS. SOLAR INDICES FOR 18 Feb 2010 WOLF NUMBER CATANIA : 034 10CM SOLAR FLUX : 085 AK CHAMBON LA FORET : /// AK WINGST : 008 ESTIMATED AP : 006 ESTIMATED ISN : 016, BASED ON 16 STATIONS. NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM RADIO BURST TYPES Catania NOAA NOTE NONE END BT #--------------------------------------------------------------------# # Solar Influences Data analysis Center - RWC Belgium # # Royal Observatory of Belgium # # Fax : 32 (0) 2 373 0 224 # # Tel.: 32 (0) 2 373 0 491 # # # # For more information, see http://sidc.be/products/meu # # Please do not reply directly to this message, but send comments # # and suggestions to 'sidctech@oma.be'. If you are unable to use # # that address, use 'rvdlinden@spd.aas.org' instead. # # To unsubscribe, visit http://sidc.be/registration/unsub.php # #--------------------------------------------------------------------#