Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 08 - 14.08.2011, Forecast on 15 - 22.08.2011 , Carrington Rotation 2113 (30,22.07.2011) SOLAR SUNSPOT ACTIVITY OF THE LAST PERIOD CHANGED FROM THE AVERAGE LEVEL TO ZERRO ACTIVITY. ESTIMATED, RATING, WEEKLY AVERAGE OF SUN- SPOT NUMBER IN THE INTERNATIONAL SYSTEM FOR THE PERIOD WAS MADE W=023+25/-23. ON THE VISIBLE DISK OF THE SUN CONSTANTLY WAS PRESENT FROM 3 TO 2 SUNSPOT GROUPS AND TO 14 AUGUST THERE ARE NO SUNSPOT GROUPS. NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE THE LOW AND VERY LOW. THE CALCULATED MOST LIKELY WEEKLY AVERAGE VALUE OF SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM FOR THE NEXT PERIOD W=025+10/-10. FLARE ACTIVITY WAS AT HIGH LEVEL ON AUGUST, 9 WHEN IN SUNSPOT GROUP AR11263 (N18L302, Sp=720 m.v.h) WERE OCCURENCED MOSTLY POWER FLARES IN THE CURRENT SOLAR CYCLE: X-RAY CLASS X6.9, AT THE AVERAGE LEVEL - ON AUGUST, 8, OTHER DAYS - ON A LOW LEVEL. SOHO CORONOGRAPH HAVE REGISTRED 53 CME FROM WHICH 4 WERE TYPE PARTIAL HALO II AND ONE HALO TYPEII FROM THE LARGE FLARE ON AUGUST, 9th. --------------------------------------------------------------------- to tm te ËÏÏ-ÔÙ ÂÁÌÌ å(1-8A) áï RII/IV CME ÒÅÎÔ ÏÐ J/m-2 MÇÃ 08.08/1800 1810 1855 N16W61L302 M3.5/1N 2.2E-2 11263 IV/2 CME 09.08/0319 0354 0439 N18W68L302 M2.5/1÷ 3.5E-2 11263 VI/1 CME/O406 09.08/0748 0805 0904 N17W69L302 X6.9/2B 1.9E-1 11263 II/1 IV/1 CME to te ËÏÏÒÄ.ÃÅÎÔÒÁ l × ÇÒÁÄ. Fl Aï CME DSF 11/<2147 <1501 N46E48 12 --------------------------------------------------------------------- NEXT WEEK FLARE ACTIVITY IS EXPECTED ON AVERAGE, LOW AND VERY LOW LEVELS. ON THE VISIBLE SOLAR DISK DURING THE LAST WEEK THE FOLLOWING CORONAL HOLES WERE OBSERVED : -------------------------------------------------------------------------- sign N end å end S end W end EE R Observatories CH - N17L169 SO9L128 S18L137 N10L173 14-15.08 4 KP,SDO,SOHO... R - solar rotations; KP - KITT PEAK solar observatory; EE - date of possible geomagnetic disturbation in the Earth's environment. -------------------------------------------------------------------------- AFTER 10.08/1730 UT THE EARTH IS IN - SECTOR OF THE INTERPLANETARY MAGNETIC FIELD. THE FOLLOWING SECTOR BOOUNDERY - /+ THE EARTH SHOULD PASS ON 02.09. AUGUST 08 09 10 11 12 13 14 AUGUST Wus 080 054 043 036 025 035 000 F10.7 102 098 090 084 083 083 088 èbcg B3.1 B4.3 B3.0 B2.4 A9.0 A8.2 ÷2.2 GOES Sp 510 420 250 050 020 025 000 Nnew 2 IMF + + +/- - - - - ACE Å>2 1.1å+8 2.3å+8 2.5å+8 3.2å+8 2.8E+8 2.1å+8 2.4å+7 GOES Nm% THULE Ap 11 9 6 5 5 5 8 áÒ Dst KIOTO Amsc 14 14 11 7 11 13 10 IZMIRAN ----------------------------------------------------------------- THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT VERY HIGH LEVEL OF FLUX WAS OBSERVED AUGUST, 8 - 13. NEXT WEEK THE GREATER THAN 2 MeV ELECTRON FLUX AT HIGH LEVEL IS EXPECTED 16 - 22 AUGUST. ALL PERIOD GEOMAGNETIC CONDITIONS WERE UNSETTLED AND QUIET. NEXT WEEK IT IS MOST PROBABLE QUIET AND UNSETTLED GEOMAGNETIC CONDITIONS. HIGHLIGHT AND FORECAST COMPOSED FROM DATA OF NOAA SEC http://www.sec.noaa.gov , OF THE SOLAR INFLUENCES DATA ANALYSIS CENTER – SIDC, BELGIUM http://sidc.oma.be/index.php3 , OF THE IZMIRAN, RUSSIA http://www.izmiran.ru WDC STP MOSCOW