Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 02 - 08.03.2020, Forecast on 09 - 16.03.2020, Carrington Rotation 2228 (01,03.03.2020) Earth out of ecliptic (-6.3 - -6.5) deg. (S30 - N20 is zone of geoeffectiveness) THE SUNSPOT-FORMING SOLAR ACTIVITY REMAINED VERY LOW WITH A SPOTLESS VISIBLE DISK, EXEPT 08.03 (50 SPOTLESS DAYS IN THE 2020). ESTIMATED, MOST LIKELY WEEKLY AVERAGE VALUE OF THE RE- LATIVE SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR PERIOD W= 1+1\-1 (Wn= 2+0\-2). THE ACTIVE REGION OF 25 CYCLE WAS FORMED ON THE VISIBLE DISC 5.03 AND BY 8.03 A SMALL SUN- SPOT GROUP FORMED. NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY WAS ON VERY LOW LEVEL. LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR NEXT WEEK IS W=010+10/-10. FLARE ACTIVITY WAS AT THE VERY LOW LEVEL. NO SOLAR FLARE, SO- LAR FILAMENT EJECTION AND ONT CORONAL MASS EJECTION (8.09) OB- SERVED FOR THE PERIOD. ------------------------------------------------------------------- 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 -------------------------------------------------------------------- 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 Spacecraft * - 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. ---------------------------------------------------------------------- AFTER 02.03/0220 UT THE IMF SECTOR SIGN WAS "-". NEXT WEEK THE BEHA- VIOR OF THE SECTOR STRUCTURE SIGN WILL NOT CHANGE. NEXT IMF SECTOR BO- UNDER THE EARTH WILL PASS AT 09.03 ----------------------------------------------------------------------- MARCH 02 03 04 05 06 07 08 MARCH Wus 000 000 000 000 000 000 013 F10.7 069 070 070 070 070 070 070 èbcg 2 2.0E+7 8.9å+6 7.2E+6 3.5E+6 1.9E+6 1.3E+6 1.5å+6 GOES Ie>2 922 439 388 264 211 209 183 pfu Ap 5 6 7 4 5 5 5 nô Dst nô KIOTO Amsc 4 8 7 4 5 4 7 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 NOT OBSERVED. NEXT WEEK THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS OR- BIT IS NOT EXPECTED. THE GEOMAGNETIC CONDITION AT MID-LATITUDES REMAINED QUITE AND UNSET- TLED ALL DAYS. NEXT WEEK THE MOST PROBABLY QUIET AND UNSETTLED GEOMAGNETIC CONDI- TION WILL OBSERVED. 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