:Issued: 2004 Aug 26 1245 UTC :Product: documentation at http://sidc.oma.be/products/meu #------------------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC (RWC-Belgium) # #------------------------------------------------------------------------------# SIDC URSIGRAM 40826 SIDC SOLAR BULLETIN 26 Aug 2004, 1223UT SIDC FORECAST (valid from 1230UT, 26 Aug 2004 until 28 Aug 2004) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 26 Aug 2004 10CM FLUX: 100 / AP: 004 PREDICTIONS FOR 27 Aug 2004 10CM FLUX: 102 / AP: 004 PREDICTIONS FOR 28 Aug 2004 10CM FLUX: 104 / AP: 004 COMMENT: Solar activity is increasing in all sunspot group visible on the solar disk at on the limb. Early today (02:08UT) a C1.8 flare erupted from Catania 01 (NOAA 0663). All active regions are regularly producing B-flares since August 25. We expect more flaring activity (mostly B and possibly C-flares) from all regions. Geomagnetic activity is remaining quiet and expected to stay so for the next few days. Solar wind speed remains below 400km/s. SOLAR INDICES FOR 25 Aug 2004 SUNSPOT INDEX : 067 10CM SOLAR FLUX : 100 AK CHAMBON LA FORET : 008 AK WINGST : /// ESTIMATED AP : 006 NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM TYPE 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.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. # #------------------------------------------------------------------------------#