:Issued: 2004 Dec 31 1239 UTC :Product: documentation at http://sidc.oma.be/products/meu #------------------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC (RWC-Belgium) # #------------------------------------------------------------------------------# SIDC URSIGRAM 41231 SIDC SOLAR BULLETIN 31 Dec 2004, 1229UT SIDC FORECAST (valid from 1230UT, 31 Dec 2004 until 02 Jan 2005) SOLAR FLARES : Active (M-class flares expected, probability >= 50%) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 31 Dec 2004 10CM FLUX: 102 / AP: 014 PREDICTIONS FOR 01 Jan 2005 10CM FLUX: 103 / AP: 016 PREDICTIONS FOR 02 Jan 2005 10CM FLUX: 103 / AP: 015 COMMENT: Sunspot group 98 (NOAA 0715) stays very active: it produced 3 M-flares up till now, all of them accompanied by a CME. In three days, it will be at the central meridian. At this position, CMEs have a larger probability to be geoeffective. We are experiencing quiet geomagnetic conditions at the moment. SOLAR INDICES FOR 30 Dec 2004 SUNSPOT INDEX : /// 10CM SOLAR FLUX : 100 AK CHAMBON LA FORET : 026 AK WINGST : /// ESTIMATED AP : 018 NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM RADIO BURST TYPES Catania NOAA NOTE 30 1034 1047 1057 N03E53 M2.2 SF 230 III/1,II/1 98 0715 associated CME (EIT wave) 30 2202 2218 2228 N03E48 M4.2 2N 230 II/1 98 0715 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.oma.be. 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. # #------------------------------------------------------------------------------#