Monthly Preliminary Report
MPR
Kjell Inge Malde, Director/Editor Web: http://www.cv-helios.net  
Hunsteinstien 42A, N-4083 Hundvaag  NORWAY Email: cvhelios@gmail.com  
             
Volume 43 Number 5               MPR no. 502               May 2023               ISSN 2535-3780
CV-Helios Network
Monthly Preliminary Report for May 2023
Solar Cycle 25: Month no. 42
Report id.: cv2305 - CV-report no.: 502
Memno. Name Country CV Obs K Obs. Tot.
CV-001 KJELL INGE MALDE NORWAY 149,2 25 1,184 9197
CV-010 FRANKY DUBOIS BELGIUM 122,0 24 0,968 9576
CV-019 ELMAR JUNKER GERMANY 196,3 8 1,557 3793
CV-023 HARTMUT BRETSCHNEIDER GERMANY 16,0 31 0,127 5807
CV-040 ROBERTO BATTAIOLA ITALY 140,0 2 1,111 2105
CV-041 JENS ROTHERMEL GERMANY 176,3 10 1,399 1422
CV-068 SVEN OVE THIMM DENMARK 83,7 25 0,664 4213
CV-077 ANDREW JOHNSTON UNITED KINGDOM 115,7 17 0,918 3622
CV-080 JAN JANSSENS BELGIUM 126,4 7 1,003 1211
CV-082 PIOTR URBANSKI POLAND 143,5 24 1,138 5427
CV-086 TOS POLAND POLAND 124,9 31 0,991 8574
CV-102 PAULO ROBERTO MOSER BRAZIL 123,1 29 0,977 2969
CV-105 ALEXEY RYBACK RUSSIA 134,7 20 1,069 3432
CV-135 GEMA ARAUJO SPAIN 147,4 30 1,170 7378
CV-136 FAUSTINO GARCIA SPAIN 95,4 18 0,757 3915
CV-139 JAVIER ALONSO SPAIN 131,9 14 1,047 4052
CV-151 JEFFREY CARELS BELGIUM 108,5 21 0,861 3182
CV-171 WALTER JOSE MALUF BRAZIL 199,8 30 1,585 2930
CV-181 ADAM DERDZIKOWSKI POLAND 112,8 24 0,895 1128
CV-198 DENIS WALLIAN FRANCE 175,0 12 1,389 560
CV-204 STEFAN MEISTER SWITZERLAND 121,5 6 0,964 755
CV-206 TADEUSZ FIGIEL POLAND 118,6 5 0,941 340
CV-208 JOHAN NEYS BELGIUM 147,6 17 1,172 714
CV-214 IGOR GRAGEDA MENDEZ BOLIVIA 121,0 21 0,960 1185
CV-215 ARNAUD MENGUS FRANCE 117,1 7 0,930 331
CV-219 KANDILLI OBSERVATORY TURKEY 117,7 21 0,934 851
CV-220 MICHEL FRANGEUL FRANCE 104,4 18 0,829 129
CV-222 MILENA NIEMCZYK POLAND 117,5 4 0,932 4
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
Totals Observers Days CV No K  
28 31 128,14 501 1,017  
Results
Date CV Obsrvrs Regions
 6 rot.		 CV-USAF 6-rot.
 6 rot.		 CV-6 rot. CV-13 rot.
1 92,00 17 6,84 107,77 104,26 86,41
2 122,60 20 6,87 108,45 104,72 86,58
3 164,16 19 6,89 109,15 105,48 86,78
4 164,07 14 6,91 109,78 106,12 86,93
5 141,36 11 6,92 110,46 106,54 87,00
6 130,18 11 6,93 110,95 106,95 87,02
7 119,07 15 6,93 111,59 107,22 86,95
8 113,92 13 6,94 112,20 107,77 86,89
9 150,50 12 6,97 112,88 108,47 86,92
10 130,10 10 6,99 113,57 108,90 86,96
11 129,85 13 7,02 114,38 109,44 86,97
12 122,75 12 7,07 114,96 109,84 86,94
13 98,28 18 7,11 115,55 110,16 86,92
14 92,22 18 7,13 115,54 110,45 86,93
15 64,33 12 7,13 115,48 110,29 86,80
16 58,50 16 7,15 115,21 109,99 86,69
17 84,75 16 7,16 115,12 109,85 86,81
18 107,00 16 7,18 115,06 109,84 87,07
19 138,25 12 7,19 115,45 109,87 87,34
20 139,56 18 7,20 116,00 110,08 87,62
21 138,53 17 7,20 116,32 110,16 87,90
22 118,40 15 7,18 116,16 110,19 88,08
23 100,63 16 7,18 115,87 109,96 88,17
24 115,50 14 7,16 115,49 109,92 88,34
25 134,85 20 7,14 115,38 109,97 88,59
26 139,00 23 7,12 115,20 110,02 88,97
27 145,53 17 7,10 115,13 110,00 89,36
28 132,64 22 7,10 114,96 109,81 89,72
29 152,29 21 7,10 114,57 109,81 90,18
30 141,00 20 7,11 114,51 109,76 90,55
31 152,84 19 7,12 114,91 109,86 90,97
 Totals/ 3,96 27,3 0,97 4,83 108,89 87,72
Avrgs
CV and CV observers          
 
           
CV-13 rot. per May 2023  
             
Latest sunspot regions developments          
   
Reg.-First-Last-Lat.-Long.-Rot.-Area-Lgth.-CV-
max.		  
Region,First date,Max.date,Last date,Lat.,Long.,Rot.,Max.mvh,Max class,Max CV 3305,12.05.23,20.05.23,21.05.23,11,28,2270,250,DKI,46
3293,30.04.23,03.05.23,12.05.23,12,150,2270,290,DHC,58 3310,17.05.23,24.05.23,29.05.23,-20,284,2271,480,CHO,41
3294,02.05.23,08.05.23,14.05.23,-8,126,2270,130,HSX,10 3311,18.05.23,24.05.23,30.05.23,18,271,2271,470,EAI,23
3296,02.05.23,04.05.23,13.05.23,16,138,2270,300,DKI,46  
3297,02.05.23,08.05.23,14.05.23,9,121,2270,510,EKC,56  
3301,09.05.23,09.05.23,18.05.23,13,38,2270,120,HSX,10  
   
   
             
:Product: Weekly Highlights and Forecasts        
Highlights of Solar and Geomagnetic Activity  
05 - 11 June 2023 http://services.swpc.noaa.gov/text/weekly.txt
   
Solar activity was moderate. There were two M-class flares during  
the period. The largest event was an M4.7 flare (R1-Minor) at  
07/1146 UTC from Region 3327 (S14, L=052, class/area = Dki/300 on 06  
June). Region 3331 (N18, L=066, class/area = Dro/20 on 07 June)  
produced an M2.5 flare (R1-Minor) at 09/1711 UTC. The remaining  
numbered regions on the visible disk were either quiet or produced  
C-class events.   
   
No proton events were observed at geosynchronous orbit.  
   
The greater than 2 MeV electron flux at geosynchronous orbit reached  
moderate levels each day of the highlight period.   
   
Geomagnetic field activity ranged from quiet to unsettled levels.  
Unsettled levels were reached on 06, 07, and 11 June. Quiet  
conditions were observed on 05 and 08-10 June.   
   
   
   
   
   
   
   
             
Monthly graph          
The above graphic show SunspotArea totals per month from May 1874 to April 2023, (RGO/USAF)
Highlights May 2023          
The sun has been crackling with lots of new regions and with it lots of activity last month.  
Solar activity has been several times at high levels in May 2023.  
The CV-I 6 rot. average is now very close to the max CV-I 6-rot. For max cycle 24! In fact:  
The CV-13 rot. average is now 94,5, just 7,2 units away from max. Solar cycle 24!  
The Solar Flux-adjusted-13 rot. average is now 144,1, just 2,1 units away from max. Solar cycle 24!  
The CV-6 rotation averages have now been 24 times over the max. of solar cycle 24 compared!  
A total of 580 regions this cycle per mid June 2023 (283 regions North and 297 regions South).  
At the same time solar cycle 24 produced 469 regions.  
   
Region,First date,Max.date,Last date,Lat.,Long.,Rot.,Max.mvh,Max class,Max CV  
3293,30.04.23,03.05.23,12.05.23,12,150,2270,290,DHC,58  
3294,02.05.23,08.05.23,14.05.23,-8,126,2270,130,HSX,10  
3296,02.05.23,04.05.23,13.05.23,16,138,2270,300,DKI,46  
3297,02.05.23,08.05.23,14.05.23,9,121,2270,510,EKC,56  
3301,09.05.23,09.05.23,18.05.23,13,38,2270,120,HSX,10  
3305,12.05.23,20.05.23,21.05.23,11,28,2270,250,DKI,46  
3310,17.05.23,24.05.23,29.05.23,-20,284,2271,480,CHO,41  
3311,18.05.23,24.05.23,30.05.23,18,271,2271,470,EAI,23  
3313,19.05.23,23.05.23,01.06.23,23,255,2271,120,HSX,10  
3314,20.05.23,26.05.23,27.05.23,15,284,2271,160,DAO,19  
3315,23.05.23,28.05.23,02.06.23,-17,234,2271,800,EKC,56  
3318,29.05.23,29.05.23,02.06.23,25,232,2271,120,DAO,19  
3319,29.05.23,31.05.23,05.06.23,-19,201,2271,300,DHI,52  
3320,29.05.23,31.05.23,09.06.23,8,127,2271,120,CSO,11  
3321,30.05.23,31.05.23,11.06.23,-15,119,2271,260,HHX,40  
   
We reckon there have passed 1273 days (solar flux 1310 days) of the new cycle by this issue.  
May continue production of lots of large regions and major solar flares and CME's too!  
Solar Max.: Our latest and final prediction to occur late July 2025, earliest possible may be April 2025.  
Solar Flux onset: OCCURED 30 September 2022, the Onset 13 rot. ctrd. Occurred 18 Mar 2023.  
   
Stay tuned and observe the solar disk from now on!  
Please remember you are always welcome to contribute with drawings and photos!  
   
TAKE A SURVEY:  
Here is a Survey of hmiigr SOHO solar images 2022.  
https://www.cv-helios.net/helios/cv/web/2022/Video2022.mov  
             
Pictures from last month - Observer contributions, etc.        
  Photo courtesy: Thanks to CV-135 Gema Araujo, Spain Highlights May 2023