Weekly Bulletin on Solar and Geomagnetic Activity
                  Highlights on 16 - 22.11.2020,
                    Forecast on 23 - 30.11.2020,
               Carrington Rotation 2237(1,31.11.2020)   
                Earth out of ecliptic (4.0 - 3.7) deg. 
               (S25 - N30 is zone of geoeffectiveness)

THE SUNSPOT-FORMING SOLAR ACTIVITY REMAINED ON VERY LOW AND LOW
LEVELS. THE SUN WOS SPOTLESS 16.11 ONLY. (206 SPOTLESS DAYS AT)
2020). ESTIMATED, MOST LIKELY WEEKLY AVERAGE VALUE OF THE SUN-
SPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR PERIOD W =9+
12/-5 (Wn=15+20/-4). ON THE VISIBLE SOLAR DISC 3 SMALL SUNSPOT 
GROUPS HAVE BEEN OBSERVED.

 NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY WAS ON LOW AND, POSSIB-
LE, MIDDLE LEVELS. A LARGE SUNSPOT GROUP APPEARED ON THE EASTERN 
LIMB AT 23.09.  LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUN-
SPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR NEXT WEEK IS W 
= 020+20/-10. 

FLARE ACTIVITY WAS AT LOW AND VERY LOW LEVEL. 6 SOLAR FLARE OF 
LOW X-RAY CLASS CLASS "C", 39-CLASS "B", 2 SOLAR FILAMENT EJEC-
TION AND 14 CORONAL MASS EJECTIONS (17-21.11) HAVE BEEN OBSER-
VED, MAINLY FROM THE EASTERN LIMB, PROMOTING THE EXIT OF A NEW 
ACTIVE REGION 23.11.
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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
16.11 <1129   <1428 N48W54L095     15
19.11  0115   0148  N42E52L161     7 
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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
óî +   Pn         N35E15L124 N20W05L104 N35W22L087 15% 21-22  4 á SOHO...
óî +   Pn         N45E05L061 N30W05L051 N40W10L046  5%  25    1 - 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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 FROM 17.11/07 UT, THE EARTH IS IN THE "+" SECTOR OF THE INTERPLANETA-
RY MAGNETIC FIELD. THE FOLLOWING THE NEXT SECTOR BOUNDARY "-/+" IT CAN 
BE EXPECT 4.12.
---------------------------------------------------------------------- 
NOVEMBER 16     17     18     19     20     21     22   NOVEMBER
Wus     000    011    011    011    011    023    035
F10.7   077    079    077    077    082    085    088
èbcg   á9.0   á5.5   á4.4   á6.0   á7.9   ÷1.8   ÷3.0   GOES
Sp      000    030    080    070    070    110    160   msh   
N               1                           1      1
IMF      -     -/+     +      +      +      +      +    DSCOVR   
Å>2  4.9E+6 4.8å+6 3.4E+6 4.0E+6 1.6E+6 1.6E+6 2.2å+7   GOES
Ie>2    482    275    197    238    178    221   1002   pfu 
Ap       2      2      3      3      8      12     27   nô  
Dst                                        -27    -43   nô KIOTO
Amsc     2      2      2      2      7      11     27   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 22.11 
WAS OBSERVED.  
 
NEXT WEEK THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS 
ORBIT IS EXPECTED 23-30.11.

MINOR MAGNETIC STORM (G1, Ams=28, dur.=24 h.) ACCORDING OF BOULDER 
CENTER DATA, AND (G1, Ams = 36, dur.= 15 h.) WAS OBSERVED 21-22.11. 
THIS DISTURBATION IS A CONSEQUENCE OF THE HIGH VELOCITY FLOW OF THE 
WESTERN GULF OF THE POLAR CORONAL HOLE REFERRED TO ABOVE. IN OTHER 
DAYS QUITE GEOMAGNETIC CONDITION WAS OBSERVED. 

NEXT WEEK THE MOST PROBABLY QUIET AND UNSETTLED GEOMAGNETIC CON-
DITION WILL BE OBSERVED. HOWEVER, 25.11 IS POSSIBLE TO STRENGT-
HEN THE GEOMAGNETIC DISTURBANCE DUE TO IMPACT OF THE SECOND BAY 
OF THE POLAR CORONAL HOLE. 

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