:Issued: 2006 Jul 28 1304 UTC :Product: documentation at http://www.sidc.be/products/meu #--------------------------------------------------------------------# # DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC # # (RWC Belgium) # #--------------------------------------------------------------------# SIDC URSIGRAM 60728 SIDC SOLAR BULLETIN 28 Jul 2006, 1258UT SIDC FORECAST (valid from 1230UT, 28 Jul 2006 until 30 Jul 2006) SOLAR FLARES : Quiet conditions (<50% probability of C-class flares) GEOMAGNETISM : Active conditions expected (A>=20 or K=4) SOLAR PROTONS : Quiet PREDICTIONS FOR 28 Jul 2006 10CM FLUX: 074 / AP: 028 PREDICTIONS FOR 29 Jul 2006 10CM FLUX: 073 / AP: 010 PREDICTIONS FOR 30 Jul 2006 10CM FLUX: 072 / AP: 006 COMMENT: The solar wind speed has increased up to 700 km/s, showing the signature of a coronal hole influence. This unexpected disturbance has driven geomagnetic activity up till K=5 early this UT-morning. Further mild geomagnetic activity (K<4) can be expected. Flaring potential is low. TODAY'S ESTIMATED ISN : 012, BASED ON 13 STATIONS. SOLAR INDICES FOR 27 Jul 2006 WOLF NUMBER CATANIA : 028 10CM SOLAR FLUX : 074 AK CHAMBON LA FORET : 015 AK WINGST : 010 ESTIMATED AP : 009 ESTIMATED ISN : 013, 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 # # 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. # #--------------------------------------------------------------------#