------------------------------------------------------------------- THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON JULY 2017 HAS MADE Wjuly = 11.0 18.3(n) THAT GIVES FOR 96 MONTHS (2017, JANUARY) DEVELOPMENT CURRENT 24 CYCLE OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*jan. = 16.7; 27.9 - on new system W*dec. = 17.1; 28.5 - on new system On July 1, 2015 Centre in Brussels moved to a new system of cal- culation 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 - VI 2020; THE INTERNATIONAL DAILY VALUE OF RELATIVE SUNSPOT NUMBER FOR 2017, JULY ACCORDING DATA OF 77 SOLAR OBSERVATORIES HAS MADE: 1.. 25 6.. 15 11.. 39 16.. 21 21.. 0m 26.. 12 31.. 0m 2.. 12 7.. 26 12.. 63M 17.. 22 22.. 0m 27.. 0m 3.. 0m 8.. 31 13.. 59 18.. 0m 23.. 0m 28.. 11 4.. 0m 9.. 43 14.. 52 19.. 0m 24.. 0m 29.. 16 5.. 14 10.. 45 15.. 33 20.. 0m 25.. 12 30.. 15 THE MONTHLY MEAN OF OBSERVED RADIO FLUX OF THE 10 cm (2800 MHz ON 2017, JULY, AND SMOOTHES ON 2017, JANUARY F10.7july = 77.6 F*10.7 jan.= 79.4 THE MONTHLY MEAN OF GEOMAGNETIC Ap-index ON 2017, JULY, AND SMOOTHES ON 2016, JANUARY Ap july = 9 Ap*jan. = 11.3 ------------------------------------------------------------------- Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 24 - 30.07.2017, Forecast on 31.07 - 6.08.2017, Carrington Rotation 2193 (20.07.2017) Earth above the ecliptic (2,8; 3,2) deg. (S32 - N35 is geoeffectiveness zone) SUNSPOT-FORMING ACTIVITY WAS ON THE VERY LOW LEVEL BUT 31.07 AND 1.08 WERE SPOTLESS DAYS - 56 DAYS IN CURRENT YEAR. THE ESTIMATED, MOST LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR THE PERIOD W=004+4/-4 (Wn= 009+ 3/-9). ON THE VISIBLE SOLAR DISK 1 SMALL AND QUITE SUNSPOT GROUP. THE ESTIMATED, MOST LIKELY WEEKLY AVERAGE VALUE OF THE RELATIVE SUN- SPOT NUMBER IN THE INTERNATIONAL SYSTEM (old) FOR THE NEXT WEEK IS W = 10+20/-10. FLARE ACTIVITY WAS AT THE LOW LEVEL AT 1.08 AND VERY LOW IN OTHER DAYS. ONE SOLAR FILAMENT EJECTIONS OCCURRENCES THROUGH THE PERIOD. ACCORDING TO THE DATA FROM SOHO AND STEREO CORONOGRAPHS > 2 CMEs HAVE BEEN OBSERVED. ---------------------------------------------------------------------- FLARES to tm te local. Class E(1-8A) AR RII/IV CME X-ray/Ïp J/m-2 DSF to te ËÏÏÒÄÉÎÁÔÙ l × ÇÒÁÄ. Fl Aï CME/to 01.08 >0856 >2337 N39W34L241 10 --------------------------------------------------------------------- NEXT WEEK THE FLARE ACTIVITY WILL REMAIN AT A VERY LOW LEVEL, UNLESS THERE IS SURFACING NEW MAGNETIC FLUX, WHICH IS UNLIKELY. 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 - N05L248 S05L243 S15L263 S02L270 31.07 2 G1 SDO, SOHO... CH + N38L190 N35L180 N05L210 N10L217 54300 03.08 2 G1 SDO, SOHO... CH + N28L108 N08L098 N03L100 N05L116 12.08 2 G0 SDO, SOHO... 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. ------------------------------------------------------------------------ 4.08/05 UT THE EARTH IS IN "+" SECTOR OF THE INTERPLANETARY MAGNE- TIC FIELD. 1 - 3.08 THE SIGN OF THE SECTOR WAS "-". NEXT SECTOR BO- UNDARY +/- EARTH SHOULD BE PASSED 0N 11.08. JULY 31 01 02 03 04 05 06 AUGUST Wus 000 000 012 013 013 013 013 F10.7 072 074 074 075 074 074 074 èbcg á7.4 á7.4 á6.5 á6.1 á5.2 á5.4 á5.3 GOES Sp 000 000 160 150 150 150 140 msh N 1 IMF + +/- - - -/+ + + DSCOVR Å>2 3.9å+8 9.6å+7 5.2E+7 6.2å+7 1.9å+6 1.3å+8 3.0å+8 GOES Ie>2 8563 5842 2755 3705 432 6433 8649 pfu Ap 2 6 5 12 23 14 12 nô Dst -39 -24 -21 nô KIOTO Amsc 4 5 5 12 23 14 15 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 WAS BE- GIN 17.07/0325 UT AND WAS OBSERVED 17.07 - 3.08. NEXT FLUX BEGIN AT 5.08 AND WAS OBSERVED 5 - 6.08. THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSTATIONARY ORBIT OF VERY HIGH LEVEL IS EXPECTED 7-8.08. GEOMAGNETIC ENVIRONMENT WAS UNSETTLED AND QUIET UP TO THE SECOND HALF 3.08, WHEN THE EARTH ENTERED THE HIGH-SPEED SOLAR WIND OF THE CORONAL HOLE (+) OF THE NORTHERN HEMISPHERE AND ON THE DATA OF THE CENTER IN BOLDER, THE MINOR MAGNETIC STORM IS REGISTERED (G0, Ams = 26, dur. = 27 h). ACCORDING IZMIRAN 3.08 MARKED (6 hr.) SUBSTORM (G0), AND A MI- NOR MAGNETIC STORM REGISTERED AT 4.08 (G0, Ams = 27, dur. = 12 h.). NEXT WEEK THE GEOMAGNETIC CONDITION WILL BE UNSETTLED AND QUIET. 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