:Issued: 2007 Jan 20 1256 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 70120 SIDC SOLAR BULLETIN 20 Jan 2007, 1246UT SIDC FORECAST (valid from 1230UT, 20 Jan 2007 until 22 Jan 2007) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 20 Jan 2007 10CM FLUX: 075 / AP: 011 PREDICTIONS FOR 21 Jan 2007 10CM FLUX: 074 / AP: 008 PREDICTIONS FOR 22 Jan 2007 10CM FLUX: 074 / AP: 005 COMMENT: There is no significant activity on the Sun, and the solar activity should remain very low. The solar wind speed has slightly decreased to 600km/s, which is probably the first sign of the expected decline of this fast stream. We thus predict quiet to unsettled geomagnetic conditions for the rest of Jan.20. Thereafter, the Earth magnetosphere should return to a quiet state. TODAY'S ESTIMATED ISN : 018, BASED ON 02 STATIONS. SOLAR INDICES FOR 19 Jan 2007 WOLF NUMBER CATANIA : /// 10CM SOLAR FLUX : 076 AK CHAMBON LA FORET : 020 AK WINGST : /// ESTIMATED AP : 014 ESTIMATED ISN : 014, BASED ON 03 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. # # #--------------------------------------------------------------------#