Weekly Bulletin on Solar and Geomagnetic Activity
                 Highlights on 21 - 28.10.2018,
                  Forecast on 29.10 - 05.11.2018,
     Carrington Rotations 2209, 2210(29,6.09; 26,10.2018)
            Earth out of ecliptic (+6.01 - +6.76) deg. 
             (S20 - N25 is zone of geoeffectiveness)

 THE SUNSPOT-FORMING ACTIVITY OF THE SUN HAVE REMAINED AT THE VERY 
LOW. TERE ARE NO SUNSPOT  ON THE SUN  (SPOTLESS - 177 DAYS IN THIS 
YEAR). ESTIMATED, MOST LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE 
SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR PERIOD W= 000 
(Wn=000). 

NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY WILL STAY AT A VERY LOW LE-
VEL. LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUNSPOT NUMBER IN 
THE INTERNATIONAL SYSTEM (old) FOR THE NEXT WEEK IS W= 010+10/-10. 

 THE FLARE ACTIVITY WAS ON THE VERY LOW LEVEL. TWO SOLAR FILAMENTS 
AND NO CORONAL MASS EJECTIONS HAVE BEEN OBSERVED.
-----------------------------------------------------------------------
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 × ÇÒÁÄ.  Fl    AR    CME/to
23.10 >1439 >2217  N50E35L078       8
25.10 <0000 <0745     0.22                                     EPL
-------------------------------------------------------------------------

NEXT WEEK THE FLARE ACTIVITY IS EXPECTED AT VERY LOW LEVELS.

ON THE VISIBLE SOLAR DISK THE FOLLOWING CORONAL HOLES WERE OBSERVED:
------------------------------------------------------------------------
  sign   N end   E end   S end  W end    Sch    EE   R  G  Space Obser.
CH +   N12L346 N10L347  S10L334 S15L324   1.7% 31.10  4  -  SOHO,SDO...
CH +   N30L018 N28L020  S12L000 S08L345   3.4% 04.11  4 G1  SOHO,SDO...
Sch - CH Square in Mm**2 (in square megameters) near the central meri-
dian on http://sdowww.lmsal.com/suntoday/; n/d - no data;
R - solar rotations; EE-date of possible geomag. disturbance in the 
Earth's environment. G(0-5)-geoeffectivity in last solar rotation on
the middle latitudes. A-active geomagnetic condition.
------------------------------------------------------------------------

 AFTER 21.10/09 UT EARTH IS IN "-" SECTOR OF THE INTERPLANETARY MAGNE-
TIC FIELD,  BUT THE SIGN OF THE SECTOR  IS VERY UNSTABLE. AFTER 28.10
THE NEW "+" SECTOR HAVE BEEN OBSERVED. NEXT STABLE SECTOR BOUNDARY -/+ 
THE EARTH MUST PASS 9.11.
 
ïCTOBER  21     22     23     24     25     26     27     28  NOVEMBER
Wus     000    000    000    000    000    000    000    000
F10.7   071    071    072    070    069    069    069    068
èbcg  <á1.0  <á1.0  <á1.0  <á1.0  <á1.0  <á1.0  <á1.0  <á1.0   GOES
Sp      000    010    000    000    000    000    000    000    msh   
N                                             
IMF      -      -      -      -     -/~    -/~    -/~    -/+   DSCOVR   
Å>2  1.8E+7 5.4E+7 6.5E+7 7.0å+7 7.2å+7 6.8E+7 6.1E+5 8.4å+5   GOES
Ie>2   1192                                                    pfu 
Ap       4      6      3      3      6      6      5      4    nô  
Dst                                                            nô KIOTO
Amsc     6      6      3      4      8      7      2      4    nô IZMIRAN 
------------------------------------------------------------------
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 BEGUN
16.10/1610 UT AND 16 - 21.10 HAVE BEEN OBSERVED.  
 
 NEXT WEEK THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS 
ORBIT IS NOT EXPECTED.

 GEOMAGNETIC CONDITION WAS QUITE AND UNSETTLED.

 THE NEXT WEEK IS MOST PROBABILITY OF QUIET AND UNSETTLED GEOMAGNE-
TIC CONDITION BEFORE 3-4.11. THE FIRST CORONAL HOLE ISN'T GEOEFFEC-
TIVE  ON ITS OWN PARAMETERS.  GEOMAGNETIC DISTURBANCE GROWTH IS EX-
PECTED WHEN THE EARTH PASSING OF THE HIGH-SPEED STREAM FROM THE SE-
COND CORONAL HOLE. PROBABILITY OF THE MAGNETIC STORM NOT LESS THAN 
70%.
 
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