:Issued: 2008 Dec 04 1212 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 81204 SIDC SOLAR BULLETIN 04 Dec 2008, 1205UT SIDC FORECAST (valid from 1230UT, 04 Dec 2008 until 06 Dec 2008) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 04 Dec 2008 10CM FLUX: 069 / AP: 013 PREDICTIONS FOR 05 Dec 2008 10CM FLUX: 069 / AP: 015 PREDICTIONS FOR 06 Dec 2008 10CM FLUX: 068 / AP: 007 COMMENT: Solar activity is quiet and is expected to remain so, as no sunspot group is visible on the solar disc. The fast solar wind stream from the low-latitude coronal hole has arrived to the Earth yesterday evening. Its current speed is around 500 km/s. Due to the average values of the interplanetary magnetic field magnitude inside the stream (around 5 nT), we do not expect it to produce a significant geomagnetic disturbance. TODAY'S ESTIMATED ISN : 000, BASED ON 06 STATIONS. SOLAR INDICES FOR 3 Dec 2008 WOLF NUMBER CATANIA : 000 10CM SOLAR FLUX : 069 AK CHAMBON LA FORET : /// AK WINGST : 004 ESTIMATED AP : 004 ESTIMATED ISN : 000, BASED ON 22 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 # #--------------------------------------------------------------------#