:Issued: 2009 Jan 21 1230 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 90121 SIDC SOLAR BULLETIN 21 Jan 2009, 1219UT SIDC FORECAST (valid from 1230UT, 21 Jan 2009 until 23 Jan 2009) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 21 Jan 2009 10CM FLUX: 070 / AP: 003 PREDICTIONS FOR 22 Jan 2009 10CM FLUX: 070 / AP: 003 PREDICTIONS FOR 23 Jan 2009 10CM FLUX: 070 / AP: 004 COMMENT: No sunspot group is now visible on the solar disc. The solar activity is thus quiet and is expected to remain so. The Earth is currently inside the slow (around 400 km/s) solar wind flow with weak (around 3 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions. TODAY'S ESTIMATED ISN : 000, BASED ON 04 STATIONS. SOLAR INDICES FOR 20 Jan 2009 WOLF NUMBER CATANIA : /// 10CM SOLAR FLUX : 070 AK CHAMBON LA FORET : /// AK WINGST : 005 ESTIMATED AP : 004 ESTIMATED ISN : 000, BASED ON 20 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 # #--------------------------------------------------------------------#