Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 23 - 29.07.2018, Forecast on 30.07 - 05.08.2018, Carrington Rotation 2006 (09,9.07.2018) Earth out of ecliptic (-0.2 - +0.2) deg. (S25 - N25 is zone of geoeffectiveness) THE SUNSPOT-FORMING ACTIVITY OF THE SUN WAS ON THE VERy LOW LEVEL: THE SUN WAS SPOTLESS (119 DAYS IN CURRENT YEAR). ESTI- MATED, MOST LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUN- SPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR PERIOD W= 000 (Wn= 000). NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY WILL BE ON THE VERY LOW LEVELS. LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUN- SPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR THE NEXT WEEK IS W=010+10/-10. THE FLARE ACTIVITY WAS ON THE VERY LOW LEVEL. THE SOLAR FILA- MENT AND CORONAL MASS EJECTIONS HAVE NOT 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 ------------------------------------------------------------------ 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 - N10L199 S25L249 S35L194 S05L181 23.07 R4 G1 SDO, ACE... 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 22.07/1346 UT EARTH IS IN "-" SECTOR OF THE INTERPLANETARY MAG- NETIC FIELD. NEXT SECTOR BOUNDARY -/+ THE EARTH MUST PASS 9.08. -------------------------------------------------------------------- JULY 23 24 25 26 27 28 29 JULY Wus 000 000 000 000 000 000 000 F10.7 067 067 066 066 067 068 068 èbcg á1.0 <á1.0 á1.0 <á1.0 <á1.0 <á1.0 <á1.0 GOES Sp 000 000 000 000 000 000 000 msh N IMF - - - - - - - DSCOVR Å>2 9.2E+6 5.3E+6 1.2å+8 1.2E+8 1.5å+8 1.2å+8 5.9E+6 GOES Ie>2 254 307 3987 3897 3945 3743 pfu Ap 3 17 8 3 5 3 4 nô Dst nô KIOTO Amsc 4 21 8 4 4 9 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 GOES15 in (electrons/cm2.s.sr) for events > 1000 pfu. THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT BEGIN- NING AT 25.07/1355 UT AND HAVE BEEN OBSERVED 25-29.07. NEXT WEEK THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT IS EXPECTED 30.07 - 5.08. THE GEOMAGNETIC CONDITION WAS QUITE AND UNSETTLED ALL DAYS, EXCEPT 25.07, WHEN THE LEVEL OF GEOMAGNETIC ACTIVITY RISE TO THE ACTIVE AND HAVE BEEN MARKED ONLY SEPARATE SUBSTORMS OF INTENSITY G0. THE NEXT WEEK THE GEOMAGNETIC CONDITION IS EXPECTED TO BE PRIMARILY QUITE AND UNSETTLED LEVELS. 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