:Issued: 2009 Dec 31 1248 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 91231 SIDC SOLAR BULLETIN 31 Dec 2009, 1241UT SIDC FORECAST (valid from 1230UT, 31 Dec 2009 until 02 Jan 2010) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 31 Dec 2009 10CM FLUX: 079 / AP: 001 PREDICTIONS FOR 01 Jan 2010 10CM FLUX: 079 / AP: 001 PREDICTIONS FOR 02 Jan 2010 10CM FLUX: 079 / AP: 001 COMMENT: While NOAA AR 11039 has been slowly decaying in the past days, it has shown this morning a slow, overall brightening and eruption. We cannot assess yet whether this recent evolution resulted in a (Earth directed?) CME. We foresee a slightly enhanced chance for a C-flaring in the coming hours. Meanwhile, the geomagnetic activity is dead quiet. TODAY'S ESTIMATED ISN : 014, BASED ON 04 STATIONS. SOLAR INDICES FOR 30 Dec 2009 WOLF NUMBER CATANIA : 021 10CM SOLAR FLUX : 077 AK CHAMBON LA FORET : /// AK WINGST : 000 ESTIMATED AP : 001 ESTIMATED ISN : 012, BASED ON 04 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 # #--------------------------------------------------------------------#