:Issued: 2007 Jul 28 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 70728 SIDC SOLAR BULLETIN 28 Jul 2007, 1214UT SIDC FORECAST (valid from 1230UT, 28 Jul 2007 until 30 Jul 2007) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOMAGNETISM : Quiet (A<20 and K<4) SOLAR PROTONS : Quiet PREDICTIONS FOR 28 Jul 2007 10CM FLUX: 070 / AP: 008 PREDICTIONS FOR 29 Jul 2007 10CM FLUX: 070 / AP: 007 PREDICTIONS FOR 30 Jul 2007 10CM FLUX: 071 / AP: 025 COMMENT: Solar activity is expected to be very low for the next 48 hours. Geomagnetic activity is expected to be quiet for the next 36 hours. Geomagnetic conditions are expected to reach unsettled to active condition levels on July 30th, due to the recurrence of a coronal hole. Current readings of the solar wind speed measured by the ACE spacecraft are about 360 km/s. TODAY'S ESTIMATED ISN : 008, BASED ON 10 STATIONS. SOLAR INDICES FOR 27 Jul 2007 WOLF NUMBER CATANIA : 000 10CM SOLAR FLUX : 069 AK CHAMBON LA FORET : /// AK WINGST : 010 ESTIMATED AP : 010 ESTIMATED ISN : 000, BASED ON 17 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 # #--------------------------------------------------------------------#