:Issued: 2010 Jul 26 1856 UTC :Product: documentation at http://www.sidc.be/products/bul #--------------------------------------------------------------------# # SIDC Weekly bulletin on Solar and Geomagnetic activity # #--------------------------------------------------------------------# WEEK 499 from 2010 Jul 19 SOLAR ACTIVITY ------------- Solar activity was very low during the week, with very little flaring activity. NOAA AR 1089 produced a C flare (C1.4, peak time 1345UT) on July 20th, which represents the strongest X-ray event of the week. GEOMAGNETIC ACTIVITY ------------------- Geomagnetic activity was very low during the week. --------------------------------------------------------------------------- DAILY INDICES DATE RC EISN 10CM Ak BKG M X 2010 Jul 19 039 011 80 006 B1.3 0 0 2010 Jul 20 031 019 87 009 B1.8 0 0 2010 Jul 21 037 020 89 006 B2.3 0 0 2010 Jul 22 065 021 88 004 B2.3 0 0 2010 Jul 23 058 026 86 012 B1.1 0 0 2010 Jul 24 058 029 85 007 B1.1 0 0 2010 Jul 25 /// 023 85 008 B1.1 0 0 # RC : Sunspot index (Wolf Number) from Catania Observatory (Italy) # EISN : Estimated International Sunspot Number # 10cm : 10.7 cm radioflux (DRAO, Canada) # Ak : Ak Index Wingst (Germany) # BKG : Background GOES X-ray level (NOAA, USA) # M,X : Number of X-ray flares in M and X class, see below (NOAA, USA) --------------------------------------------------------------------------- NOTICEABLE EVENTS DAY BEGIN MAX END LOC XRAY OP TENCM TYPE Cat NOAA NOTE #--------------------------------------------------------------------# # 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://www.sidc.be. 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 # #--------------------------------------------------------------------#