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 8               MPR no. 505               August 2023               ISSN 2535-3780
CV-Helios Network
Monthly Preliminary Report for August 2023
Solar Cycle 25: Month no. 45
Report id.: cv2308 - CV-report no.: 505
Memno. Name Country CV Obs K Obs. Tot.
CV-001 KJELL INGE MALDE NORWAY 125,5 26 1,148 9275
CV-010 FRANKY DUBOIS BELGIUM 108,6 28 1,016 9662
CV-019 ELMAR JUNKER GERMANY 41,1 8 0,317 3835
CV-023 HARTMUT BRETSCHNEIDER GERMANY 79,6 23 0,754 5885
CV-040 ROBERTO BATTAIOLA ITALY 92,1 10 0,937 2127
CV-068 SVEN OVE THIMM DENMARK 51,1 17 0,461 4269
CV-077 ANDREW JOHNSTON UNITED KINGDOM 97,0 18 0,970 3666
CV-080 JAN JANSSENS BELGIUM 72,0 3 0,786 1223
CV-082 PIOTR URBANSKI POLAND 113,7 25 1,076 5511
CV-086 TOS POLAND POLAND 112,4 31 1,035 8666
CV-091 GRZEGORZ DALEK POLAND 115,1 22 1,067 4756
CV-102 PAULO ROBERTO MOSER BRAZIL 103,4 28 0,945 3051
CV-105 ALEXEY RYBACK RUSSIA 111,1 16 1,046 3478
CV-122 VLASTISLAV FEIK CZECH REPUBLIC 101,4 9 0,960 3172
CV-135 GEMA ARAUJO SPAIN 132,5 31 1,210 7470
CV-136 FAUSTINO GARCIA SPAIN 76,2 10 0,628 3961
CV-139 JAVIER ALONSO SPAIN 113,2 21 1,069 4114
CV-151 JEFFREY CARELS BELGIUM 99,5 13 1,014 3230
CV-171 WALTER JOSE MALUF BRAZIL 188,7 23 1,692 2990
CV-181 ADAM DERDZIKOWSKI POLAND 73,7 12 0,721 1174
CV-198 DENIS WALLIAN FRANCE 135,8 10 1,351 608
CV-204 STEFAN MEISTER SWITZERLAND 92,3 18 0,879 797
CV-205 TOM MANGELSDORF UNITED STATES 85,0 1 0,708 54
CV-206 TADEUSZ FIGIEL POLAND 77,3 8 0,770 352
CV-207 ONDREJOV OBS. (AI CAS) CZECH REPUBLIC 120,9 23 1,156 3783
CV-208 JOHAN NEYS BELGIUM 99,1 14 0,935 762
CV-214 IGOR GRAGEDA MENDEZ BOLIVIA 94,5 30 0,850 1262
CV-215 ARNAUD MENGUS FRANCE 93,3 6 0,936 350
CV-219 KANDILLI OBSERVATORY TURKEY 113,7 26 1,008 935
CV-220 MICHEL FRANGEUL FRANCE 82,2 10 0,809 166
CV-222 MILENA NIEMCZYK POLAND 114,3 17 1,130 49
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
Totals Observers Days CV No K  
31 31 100,53 537 0,948  
Results
Date CV Obsrvrs Regions
 6 rot.
CV-USAF 6-rot.
 6 rot.
CV-6 rot. CV-13 rot.
1 161,42 12 7,54 116,42 118,18 104,43
2 146,83 17 7,55 116,37 118,23 104,67
3 156,24 17 7,55 116,16 118,42 104,89
4 140,06 16 7,57 116,60 118,53 105,07
5 138,00 10 7,57 116,58 118,66 105,18
6 127,43 14 7,59 116,57 118,74 105,26
7 102,47 15 7,60 116,27 118,60 105,28
8 82,06 15 7,62 115,93 118,34 105,33
9 78,47 15 7,62 115,78 118,16 105,38
10 78,40 24 7,62 115,56 117,91 105,43
11 85,55 21 7,62 115,40 117,89 105,67
12 68,37 18 7,60 115,06 117,79 105,74
13 76,47 18 7,60 114,90 117,68 105,83
14 111,75 20 7,58 114,70 117,66 105,95
15 116,88 16 7,57 114,84 117,77 105,97
16 139,36 14 7,57 114,98 117,82 105,98
17 120,09 22 7,56 114,62 117,72 105,97
18 118,07 15 7,54 114,21 117,56 106,00
19 106,75 19 7,52 113,90 117,44 106,17
20 80,43 22 7,50 113,45 117,10 106,29
21 86,11 18 7,49 113,42 116,92 106,37
22 112,08 23 7,48 113,18 116,89 106,60
23 102,80 24 7,46 113,48 116,91 106,75
24 100,65 19 7,45 113,66 117,04 106,89
25 109,72 17 7,44 114,17 117,24 107,01
26 126,64 13 7,43 114,60 117,70 107,21
27 102,08 12 7,41 115,07 118,11 107,47
28 92,79 14 7,41 115,74 118,50 107,61
29 105,08 12 7,43 115,66 118,93 107,78
30 101,86 14 7,43 115,74 119,01 107,94
31 106,60 14 7,42 115,80 119,02 108,07
 Totals/ 3,96 27,3 0,97 4,83 117,95 106,14
Avrgs
CV and CV observers          
 
           
CV-13 rot. per Aug 2023  
             
Latest sunspot regions developments          
   
Reg.-First-Last-Lat.-Long.-Rot.-Area-Lgth.-CV-
max.
 
00.01.1900 3395,03.08.23,12.08.23,15.08.23,13,330,2274,180,DAI,22
Region,First date,Max.date,Last date,Lat.,Long.,Rot.,Max.mvh,Max class,Max CV 3397,07.08.23,13.08.23,17.08.23,18,305,2274,120,DAO,19
3380,23.07.23,02.08.23,04.08.23,-11,125,2273,430,DKC,55 00.01.1900  
3387,27.07.23,06.08.23,08.08.23,21,69,2273,140,DSI,28  
3392,31.07.23,04.08.23,10.08.23,9,39,2273,200,DAO,19  
3394,03.08.23,09.08.23,14.08.23,-23,343,2274,270,DHO,49  
   
   
             
:Product: Weekly Highlights and Forecasts        
Highlights of Solar and Geomagnetic Activity  
04 - 10 September 2023 http://services.swpc.noaa.gov/text/weekly.txt
   
Solar activity ranged from low to moderate levels R1/Minor). Low  
levels were observed on 04, 06 and 08-10 Sep. Moderate levels  
occurred on 05 and 07 Sep. On 05 Sep, Region 3421 (N15, L=343,  
class/area Eai220 on 07 Sep) produced 3 M-class flares, the largest  
an M2.0/2n at 05/0812 UTC. This region also produced 21 C-class  
flares. On 07 Sep, Region 3425 (N23, L=246, class/area Dai/140 on 08  
Sep) produced an M2.1/1b at 07/1909 UTC. Associated with this flare  
was a 1,238 sfu Type II Sweep. Region 3425 also produced 9 C-class  
flares. The largest region on the disk was Region 3423 (N16, L=279,  
Ekc/380 on 10 Sep). This region produced 8 C-class flares. During  
the period, numerous CMEs were detected on both the front and back  
side. None were determined to be Earth-directed.   
   
The greater than 10 MeV protons at geosynchronous orbit were  
slightly enhanced on 06-07 Sep due to M-class activity on 05 Sep.   
   
   
Solar activity is expected to be at low to moderate levels through  
the forecast period. M-class flaring (R1-R2/Minor-Moderate) is  
expected to dominate from 15-28 Sep when old Region 3413 (N10,  
L=099) returns to the visible disk.   
   
No proton events are expected at geosynchronous orbit.  
             
Progress Solar Cycle no. 25          
The above graphic show CV-Int. levels solar cycle 25 compared to same stage previous cycles 21-24.
Highlights August 2023          
The solar activity is still rising though many regions have been of modest sizes.  
However, both CV-I 6 and 13 rotational averages have reached interesting values.  
The 6-rot. averages have now superseded cycle 24, and the first time  
this happened was on 01 May this year!  
Report-end this MPR 505 for August correspond to 22nd February 2002 (day 1375),  
and the 13-rot. Average is not just 1,14 CV-units off.  
When it comes to the 6-rotation averages we have now passed cycle 23 with 6,53 CV units!  
A total of 679 regions this cycle per end September 2023 (330 regions North and 349 regions South).   
At the same time solar cycle 24 produced 534 regions .(217 north and 317 south)  
   
Region,First date,Max.date,Last date,Lat.,Long.,Rot.,Max.mvh,Max class,Max CV  
3380,23.07.23,02.08.23,04.08.23,-11,125,2273,430,DKC,55  
3387,27.07.23,06.08.23,08.08.23,21,69,2273,140,DSI,28  
3392,31.07.23,04.08.23,10.08.23,9,39,2273,200,DAO,19  
3394,03.08.23,09.08.23,14.08.23,-23,343,2274,270,DHO,49  
3395,03.08.23,12.08.23,15.08.23,13,330,2274,180,DAI,22  
3397,07.08.23,13.08.23,17.08.23,18,305,2274,120,DAO,19  
   
   
We expect a major upgoing of CV-I totals later on this year.  
   
As mentioned in last issue, we might reach max. CV-levels at near or just over 300.  
It now seems that prediction mix of 6 and 13 rotation averages may indicate maximum 23.06.2025 (+/- 113d)  
as a time of maximum for the CV-I (but still, may be one rotation later). Updates will come.  
   
We reckon there have passed 1365 days (solar flux 1402 days) of the new cycle by this issue.  
We may see a continued production of large regions and major solar flares and CME's too!  
   
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 August 2023    
   
  Left: Photo from CV-135 Gema Araujo, Spain  
  from 01 August 2023.  
 
On this day she saw 12 sunspot regions  
  and the CV was measured to 197 (CV-HN: 161)  
   
   
   
   
   
   
   
   
     
   
   
   
   
  Right: Hα-photo same date  
   
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Number of sunspot regions visible per day, percentage of total and per cycle      
   
   
   
 
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
             
             
Number of sunspot regions visible per day, percentage of total and per cycle