Weekly Bulletin on Solar and Geomagnetic Activity
         Highlights on 03 - 09.09.2012,
          Forecast on 10 - 17.09.2012,
Carrington Rotations 2127, 2128 (15,04.08; 11,29.09.2012)

SUNSPOT-FORMING ACTIVITY OF THE SUN ON SEPTEMBER 13 AND 14 WAS AT THE 
LOW LEVEL ALSO DURING THE REMAINING DAYS ON THE AVERAGE LEVEL. WEEKLY,  
THE AVERAGE OF SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM FOR THE PE-
RIOD WAS MADE W=036+10/-10. ON THE SOLAR DISK CONSTANTLY THERE WAS PRE-
SENT FROM 6 TO 2 SMALL SUNSPOTS GROUPS.

NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE AVERAGE. THE 
CALCULATED MOST LIKELY WEEKLY AVERAGE VALUE OF SUNSPOT NUMBER  IN  THE 
INTERNATIONAL SYSTEM FOR THE NEXT WEEK IS EXPECTED W=050+20/-10.

FLARE ACTIVITY WAS ON THE LOW LEVEL AT SEPTEMBER 10-13 AND OTHER DAYS 
- ON VERY LOW. BY DATA OF SOHO AND STEREO CORONOGRAPHS FOR THE PERIOD 
IT WAS OBSERVED 59 CME AMONG WHICH 4 WERE TYPE "PARTIAL HALO II".
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FLARES  to   tm    te   c/p local. Class  E(1-8A)  AR   RII/IV  CME
                                  X / opt. J/m-2
DSF     to         te     c/p local.  l in deg.   Fl     AR     CME
10.09      ~1000             SW           ~7                CME/420 km/s
13.09       0640        N22W20L340         9                CME/536 km/s
c/p local. - central part localization 
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ON THE FOLLOWING WEEK FLARE ACTIVITY IS EXPECTED ON LOW AND VERY LOW 
LEVELS. 
 
ON THE VISIBLE SOLAR DISK DURING THE LAST WEEK THE FOLLOWING CORONAL 
HOLES WERE OBSERVED:
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  sign N end   Å end   S end   W end       EE    R   Observatories
CH -   N32L024 N25L020 N21L025 N27L032   10.09   7   SDO, SOHO....
CH ?   S03L004 S06L001 S08L355 S05L007   13.09   1   SDO, SOHO....
CH +   S30L266 S38L263 S45L281 S35L291   19.09   1   KP, SDO, SOHO..
CH -   N12L256 N10L240 S04L250 N08L260   21.09   6   KP, SDO, SOHO..
R - solar rotations; KP - KITT PEAK solar observatory;
EE-date of possible geomag. disturbation in the Earth's environment.
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 AFTER 16.09/16 UT  EARTH IS IN "+" SECTOR INTERPLANETARY MAGNETIC 
FIELDS. THE FOLLOWING SECTOR BOUNDARY +/ - EARTH SHOULD PASS 20.09.

SEPTEMBER  10     11     12     13     14     15     16    SEPTEMBER
Wus       062    073    068    044    044    053    077 
F10.7     111    105    103    099    101    098    097 
èbcg     ÷4.7   ÷4.8   B4.1   ÷3.1   ÷1.5   ÷1.7   ÷1.5    GOES
Sp        250    390    380    390    270    300    240   
N          1             2                    1      2      
IMF       +/ -    -   -/+/-     -      -     -      -/+    ACE
Å>2    6.4å+7 5.9E+7 5.0E+7 2.2å+7 1.8å+7 1.4å+7 2.3E+7    GOES
Nm%                                                        THULE
Ap        4       2      5      6      5      6      7     áÒ
Dst                                                        ëIOTO
Amsc      6       5      7      7      8      7      10    IZMIRAN
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THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSTATIONARY ORBIT VERY 
HIGH LEVEL WAS OBSERVED 9 - 12.09.
 
THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSTATIONARY ORBIT VERY 
HIGH LEVEL IS NOT EXPECTED.

THE GEOMAGNETIC CONDITIONS REMAINED UNSETTLED AND QUITE.

NEXT WEEK THE GEOMAGNETIC CONDITIONS IS EXPECTED UNSETTLED AND 
QUIET.

HIGHLIGHT AND FORECAST COMPOSED FROM DATA
OF NOAA SWPC            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