------------------------------------------------------------------- THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON JULY 2018 HAS MADE Waug. = 5.3 8.8(n) THAT GIVES FOR 109 MONTHS (2018, FEBRUARY) OF DEVELOPMENT CURRENT 24 SOLAR CYCLE THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*feb. = 7.6 12.6 - in new system W*jan. = 9.2 15.4 - in new system On July 1, 2015 Centre in Brussels moved to a new system of calcu- lation the relative number of sunspots and practically all of the values were replaced throughout the numbered series of Wolf numbers (see link). While there is addictive, I recalculated (0.6) to the old system, but only W*, and present below the new values for the minimum and maximum of 24 cycles SA. THE BEGINNING OF 24 SOLAR CYCLE - I 2009 with W*=1.8; (2.2) THE TIME OF THE CURRENT CYCLE MAXIMUM - IV 2014, - Wmax = 82;(116.4) THE END OF 24 SOLAR CYCLE (THE POINT OF MINIMUM) - IV - X 2020; THE INTERNATIONAL DAILY VALUE OF RELATIVE SUNSPOT NUMBER FOR 2018, AUGUST ACCORDING DATA OF 67 SOLAR OBSERVATORIES HAS MADE: 1.. 12 6.. 0 11.. 0 16.. 13 21.. 16 26.. 28 31.. 0 2.. 11 7.. 0 12.. 0 17.. 12 22.. 12 27.. 13 3.. 0 8.. 0 13.. 0 18.. 11 23.. 15 28.. 12 4.. 0 9.. 0 14.. 12 19.. 14 24.. 29 29.. 0 5.. 0 10.. 0 15.. 13 20.. 16 25.. 33M 30.. 0 Min: 0 on 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 29, 30, 31 THE MONTHLY MEAN OF OBSERVED RADIO FLUX OF THE 10 cm (2800 MHz ON AUGUST 2018, AND SMOOTHES ON 2018, FEBRUARY F10.7aug. = 69.1 F*10.7feb.= 73.3 THE MONTHLY MEAN OF GEOMAGNETIC Ap-index ON AUGUST 2018, AND SMOOTHES ON 2018, FEBRUARY Ap aug. = 10 Ap*feb. = 9.1 ------------------------------------------------------------------- Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 27.08 - 02.09.2018, Forecast on 03 - 10.09.2018, Carrington Rotation 2207, 2208 (06,1.08; 02,3.09.2018) Earth out of ecliptic (+7.06 - +7.2) deg. (S18 - N30 is zone of geoeffectiveness) THE SUNSPOT-FORMING ACTIVITY OF THE SUN HAVE REMAINED AT LOW LEVEL, AND AFTER 28.09 THE SOLAR DISC WAS SPOTLESS(136 DAYS ON CURRENT YEAR). ESTIMATED, MOST LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR PERIOD W = 002+5/-2 (Wn = 003+9/-3). ON THE VISIBLE SOLAR DISK ONE SMALL SUNSPOT GROUP HAVE BEEN OBSERVED. NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY WILL STAY AT A VERY LOW. LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR THE NEXT WEEK IS W= 030+10/-30. THE FLARE ACTIVITY WAS ON THE VERY LOW LEVEL. THREE SOLAR FILAMENT AND ONE 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 28.08 >0111 >1340 S41W22L034 8 29.08 >0541 >2352 N37W03L040 19 30.08 >0116 <1400 S45W12L018 5 ------------------------------------------------------------------------- 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 - N10L354 N01L004 S15L349 S05L329 3.4% 06.08 R3 SDO, ACE... Sch - CH Square in Mm**2 (in square megameters) near the central meri- dian on http://sdowww.lmsal.com/suntoday/ or in % of the visible hemi- sphere; 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 22.08/1130 UT EARTH IS IN "+" SECTOR OF THE INTERPLANETARY MAG- NETIC FIELD. NEXT SECTOR BOUNDARY +/- THE EARTH MUST PASS 6.09. ------------------------------------------------------------------ AUGUST 27 28 29 30 31 01 02 SEPTEMBER Wus 012 011 000 000 000 000 000 F10.7 070 070 071 068 068 068 068 èbcg á1.2 á1.5 á1.2 á1.2 <á1.0 <á1.0 <á1.0 GOES Sp 050 010 000 000 000 000 000 msh N IMF + + + + + + + DSCOVR Å>2 8.8E+8 3.5E+9 3.1å+9 3.2E+9 1.9å+9 1.0å+9 7.4E+8 GOES Ie>2 39676 97630 97634 56173 61000 24184 19396 pfu Ap 30 10 5 4 4 4 5 nô Dst nô KIOTO Amsc 26 9 6 4 5 7 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 AT 18.08/1410 AND 18 - 26.08 HAVE BEEN OBSERVED AND 27.08- 02.09 IT REACHED EXTREME VALUES. NEXT WEEK THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSYNCHRONOUS ORBIT IS EXPECTED 03-10.09. MINOR MAGNETIC STORM (G2, áms=38, dur.=18 h) ACCORDING DATA OF THE CENTER IN BOULDER AND (G2, áms = 39, dur.= 15 h) ACCORDING IZMIRAN DATA AT 27.08 CONTINUE GEOMAGNETIC DISTURDFNCT BEGAN WITH THE END OF THE DAY 25.09. AFTER COMING ANOMALOUSLY GEOEFFECTIVENESS CME 20. 09 WITHOUT SIGNIFICANT HIGH-SPEED STREAM (CH). THE GEOMAGNETIC CON- DITION WAS QUITE AND UNSETTLED IN OTHER DAYS. THE NEXT WEEK THE GEOMAGNETIC CONDITION IS EXPECTED TO BE QUITE AND UNSETTLED. 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