Weekly Bulletin on Solar and Geomagnetic Activity
                  Highlights on 08 - 14.02.2021,
                  Forecast on 15 - 22.02.2021,
   Carrington Rotation 2240, 2241 (22,27.01; 18,62.02.2021)   
              Earth out of ecliptic (-3.9 - -4.4) deg. 
              (S33 - N29 is zone of geoeffectiveness)

 THE SUNSPOT-FORMING SOLAR ACTIVITY REMAINED ON VERY LOW LEVEL, 
SOLAR DISC  WAS SPOTLESS  (28 DAYS IN CURRENT YEAR). ESTIMATED, 
MOST LIKELY WEEKLY AVERAGE VALUE OF THE SUNSPOT NUMBER  IN THE 
INTERNATIONAL SYSTEM (old) FOR PERIOD W=0 (Wn=0). 

 NEXT WEEK SUNSPOT ACTIVITY  WILL BE ON VERY LOW LEVEL. WEEKLY 
AVERAGE VALUE OF THE RELATIVE SUNSPOT NUMBER IN THE INTERNATI-
ONAL SYSTEM (old) FOR NEXT WEEK IS W=010+10/-10. 

FLARE ACTIVITY  WAS AT LOW LEVEL. 1 SOLAR FLARE OF X-RAY CLASS 
"B", 9-CLASS "A", ONE SOLAR FILAMENT EJECTA (12.02) AND 11 CO- 
RONAL MASS EJECTIONS (9-13.02) HAVE BEEN OBSERVED.
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FLARES >M1 X-RAY CLASSES
        to   tm    te   local.   Class  E(1-8A) AR  RII/IV   CME
                                X-ray/Ïp J/m-2
DSF     to     te  localization   l deg.  Fl    AR       CME/to
12.02 >0030  >1617  S28W65L005     10 
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NEXT WEEK THE FLARE ACTIVITY IS EXPECTED AT VERY LOW LEVEL.

ON THE VISIBLE SOLAR DISK THE FOLLOWING CORONAL HOLES WERE OBSERVED:
---------------------------------------------------------------------
  sign  N end  E end   S end   W end    Sch   EE   R  G Sp/craft 
CH*-  S15L077 S30L097 S45L087 S20L074  <8  14.02  2   SOHO...
óî*+  N40L056 N25L046 N18L056 N25L066  <7  16.02  8   SOHO...
* - low geoeffectivity, the substorms with duration <6 h. only.
Sch - CH area in % solar hemisphere near the central meridian on 
https://www.solarmonitor.org/; n/d - no data; R - solar rotations; 
EE-date of possible geomagnetic disturbance in the Earth's environment. 
G(0-5)-geoeffectivity in last solar rotation on the middle latitudes. 
A-active geomagnetic condition. 
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 AFTER 11.02/0730 UT THE EARTH IS IN THE "-" SECTOR OF THE INTERPLA-
NETARY MAGNETIC FIELD. THE FOLLOWING SECTOR BOUNDARY "+/-" IT CAN BE 
EXPECT 19.02.
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FEBRUARY 08     09     10     11     12     13     14   FEBRUARY
Wus     000    000    000    000    000    000    000
F10.7   074    070    074    076    072    071    071
èbcg   A1.8   A1.4   A1.7   á1.3   á1.3   A1.0   A1.1   GOES
Sp      000    000    000    000    000    000    000   msh   
N                                                     
IMF      +      +      +     +/-     ~      -      -    DSCOVR   
Å>2  9.8E+6 4.6å+6 5.4E+6 1.1E+7 7.2E+6 1.6å+6 2.0E+6   GOES
Ie>2    546    268    304    434    406    198    166   pfu 
Ap       6      4      2      4      5      13     4    nô  
Dst                                                     nô KIOTO
Amsc     7      3      3      2      2      9      4    nô IZMIRAN 
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Å>2 - Daily Electron Fluency e/(cm2-ster-day) with E>2 MeV.
Ie>2 - the maximum intensity of electron flux in geostationary or-
bits in days according to GOES-15 in (electrons/cm2.s.sr) for events
> 1000 pfu.

THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT NOT 
OBSERVED.  
 
NEXT WEEK THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS 
ORBIT IS NOT EXPECTED.

 THE GEOMAGNETIC CONDITION  WAS UNSETTLED AND QUITE. 

IN THE NEXT WEEK THE MOST PROBABLE IS EXPECTED A QUITE AND UNSETT-
LED GEOMAGNETIC CONDITION.  

HIGHLIGHT AND FORECAST COMPOSED FROM DATA:
NOAA SWPC, BOULDER, USA               http://www.swpc.noaa.gov,
THE SOLAR INFLUENCES DATA ANALYSIS CENTRE, 
SIDC, BRUSSELS, BELGIUM               http://sidc.oma.be/index.php3, 
THE IZMIRAN, MOSCOW, TROITSK, RUSSIA  http://www.izmiran.ru
                                                          V. Ishkov