:Issued: 2007 Jan 19 1238 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 70119 SIDC SOLAR BULLETIN 19 Jan 2007, 1225UT SIDC FORECAST (valid from 1230UT, 19 Jan 2007 until 21 Jan 2007) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOMAGNETISM : Active conditions expected (A>=20 or K=4) SOLAR PROTONS : Quiet PREDICTIONS FOR 19 Jan 2007 10CM FLUX: 076 / AP: 013 PREDICTIONS FOR 20 Jan 2007 10CM FLUX: 075 / AP: 014 PREDICTIONS FOR 21 Jan 2007 10CM FLUX: 074 / AP: 007 COMMENT: The current very low solar activity will continue over the coming days. The solar wind is expected to remain near its present value of 620km/s for the next 24 hours and then, it will finally start to decline. The geomagnetic will remain unsettled to active for one more day, with still a risk of a short-lived minor storm. Then, by late Jan.20, it will settle down to mostly quiet levels as the coronal hole influence wanes. TODAY'S ESTIMATED ISN : 029, BASED ON 01 STATION. SOLAR INDICES FOR 18 Jan 2007 WOLF NUMBER CATANIA : 036 10CM SOLAR FLUX : 077 AK CHAMBON LA FORET : 033 AK WINGST : /// ESTIMATED AP : 021 ESTIMATED ISN : 018, BASED ON 04 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. # # #--------------------------------------------------------------------#