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 44 Number 5               MPR no. 514               May 2024               ISSN 2535-3780
CV-Helios Network
Monthly Preliminary Report for May 2024
Solar Cycle 25: Month no. 54
Report id.: cv2405 - CV-report no.: 514
Memno. Name Country CV Obs K Obs. Tot.
CV-001 KJELL INGE MALDE NORWAY 152,6 25 1,093 9438
CV-010 FRANKY DUBOIS BELGIUM 119,5 25 0,831 9831
CV-019 ELMAR JUNKER GERMANY 181,8 8 1,301 3892
CV-023 HARTMUT BRETSCHNEIDER GERMANY 101,5 20 0,711 6041
CV-040 ROBERTO BATTAIOLA ITALY 143,7 3 1,061 2171
CV-041 JENS ROTHERMEL GERMANY 171,9 11 1,231 1470
CV-068 SVEN OVE THIMM DENMARK 91,0 26 0,643 4384
CV-077 ANDREW JOHNSTON UNITED KINGDOM 119,8 19 0,841 3775
CV-080 JAN JANSSENS BELGIUM 129,5 2 0,914 1237
CV-082 PIOTR URBANSKI POLAND 133,7 30 0,931 5668
CV-086 TOS POLAND POLAND 131,0 31 0,918 8905
CV-091 GRZEGORZ DALEK POLAND 144,8 27 1,021 4867
CV-102 PAULO ROBERTO MOSER BRAZIL 131,9 26 0,907 3285
CV-105 ALEXEY RYBACK RUSSIA 160,7 16 1,144 3580
CV-135 GEMA ARAUJO SPAIN 178,1 31 1,248 7736
CV-136 FAUSTINO GARCIA SPAIN 146,8 8 1,018 4066
CV-139 JAVIER ALONSO SPAIN 165,1 20 1,144 4267
CV-151 JEFFREY CARELS BELGIUM 132,4 14 0,959 3335
CV-171 WALTER JOSE MALUF BRAZIL 234,4 23 1,593 3167
CV-181 ADAM DERDZIKOWSKI POLAND 137,9 21 0,965 1259
CV-198 DENIS WALLIAN FRANCE 183,5 2 1,297 635
CV-204 STEFAN MEISTER SWITZERLAND 137,0 2 1,004 841
CV-206 TADEUSZ FIGIEL POLAND 138,7 9 0,994 383
CV-207 ONDREJOV OBS. (AI CAS) CZECH REPUBLIC 163,7 28 1,144 3953
CV-208 JOHAN NEYS BELGIUM 150,5 11 1,032 812
CV-209 CAIO CRESPO MORAES BRAZIL 94,9 12 0,680 583
CV-214 IGOR GRAGEDA MENDEZ BOLIVIA 147,6 23 1,041 1483
CV-215 ARNAUD MENGUS FRANCE 128,7 3 0,919 392
CV-219 KANDILLI OBSERVATORY TURKEY 138,9 21 0,973 1126
CV-220 MICHEL FRANGEUL FRANCE 127,7 18 0,923 251
CV-222 MILENA NIEMCZYK POLAND 115,7 20 0,815 144
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
             
Totals Observers Days CV No K  
31 31 143,05 535 1,010  
Month Results for May 2024
Date CV Obsrvrs Regions
 6 rot.
CV-USAF 6-rot.
 6 rot.
CV-6 rot. CV-13 rot.
1 113,00 20 7,84 110,12 110,36 112,87
2 126,50 17 7,82 110,05 110,51 112,98
3 141,50 15 7,80 110,01 110,56 113,15
4 165,53 16 7,79 110,04 110,74 113,41
5 165,35 16 7,78 109,75 110,81 113,76
6 197,00 11 7,76 109,40 110,89 114,04
7 157,40 15 7,74 109,51 110,80 114,19
8 149,77 13 7,71 109,60 110,83 114,19
9 146,67 18 7,68 109,58 110,89 114,19
10 135,16 19 7,66 109,74 111,07 114,17
11 137,81 20 7,64 109,65 111,04 114,23
12 164,37 18 7,65 110,00 111,31 114,44
13 198,37 18 7,67 110,56 111,94 114,71
14 146,81 15 7,70 110,75 112,16 114,71
15 126,71 13 7,73 110,88 112,20 114,60
16 159,69 15 7,76 111,02 112,41 114,61
17 138,75 16 7,78 111,18 112,59 114,58
18 132,30 19 7,79 111,55 112,67 114,46
19 138,05 21 7,79 111,60 112,77 114,42
20 134,45 22 7,78 111,70 112,98 114,31
21 149,33 17 7,79 112,08 113,22 114,19
22 153,50 16 7,77 112,50 113,53 114,11
23 134,84 19 7,78 113,10 114,04 114,08
24 132,93 15 7,78 113,61 114,32 114,01
25 109,83 18 7,77 113,87 114,38 113,96
26 116,82 16 7,79 114,13 114,42 113,87
27 126,78 17 7,79 114,30 114,54 113,72
28 153,14 13 7,77 114,66 114,81 113,70
29 143,00 18 7,77 114,91 115,42 113,73
30 129,20 14 7,76 115,00 115,53 113,81
31 119,50 15 7,74 115,01 115,44 113,94
 Totals/ 143,36 16,6 7,75 111,61 112,55 114,04
Avrgs
CV and CV observers          
 
 
CV-13 rot. per May 2024  
   
   
   
   
   
   
   
   
   
   
   
   
             
:Product: Weekly Highlights and Forecasts        
Highlights of Solar and Geomagnetic Activity  
03 - 09 June 2024  
   
Solar activity ranged from moderate to high levels. Region 3697 Click on link below  
(S18, L=350, class/area=Fkc/350 on 03 Jun) was the most active to read the full weekly  
sunspot region this period and produced 14 (R1) Minor events and two http://services.swpc.noaa.gov/text/weekly.txt
R2 (Moderate) events; the largest of which was a long-duration  
M9.7/1f flare at 08/0149 UTC. Following the M9.7 flare, a SEP event  
commenced and a partial halo, Earth-directed CME was produced.  
Region 3697 also produced an M6.1/2b flare at 06/1506 UTC. Regions  
3695 (N27, L=030, class/area=Cao/50 on 03 Jun), 3703 (S08, L=327, National Oceanic and Atmospheric Administration logo
 
class/area=Dac/200 on 07 Jun), and 3709 (S10, L=218,  
class/area=Cai/140 on 09 Jun) each produced a single R1 event.   
   
Solar radiation storm conditions were observed on 08-09 Jun,  
following the long-duration M9.7 flare at 08/0149 UTC from Region  
3697. The greater than 100 MeV proton flux exceeded 1 pfu beginning  
at 08/0225 UTC, reached a peak flux of 8 pfu at 08/0625 UTC, and  
decreased below the 1 pfu threshold at 08/1455 UTC. The greater than  
10 MeV proton flux exceeded the S1 (Minor) event threshold beginning  
Solar activity is expected to reach moderate and high levels  
throughout the period. M-class flare activity is likely-to-expected  
with a varying chance for X-class flares.   
   
No proton events are expected at geosynchronous orbit, barring  
significant flare activity.   
             
Progress Solar Cycle no. 25          
Graphic show CV-Int. levels cycle 25 compared to same stage cycles 21-24 per 14 Jun 2024.
Highlights May 2024          
   
The solar activity in May 2024 was very active with large regions, multiple solar flares,  
and radio storms.  The apperarance of region 3664 was very active and flare-procucer.  
On the 10th May it reached 2400 mvh then becoming the 7th Supergroup this cycle.  
   
The 6 rot. average for solar cycle 25 now really competes cycle 23 very close,  
and 13 rot. average is not far behind either.  
   
A total of 962 regions this cycle per end June 2024 (476 regions North and 486 regions South).   
At the same time solar cycle 24 produced 725 regions .(316 north and 409 south)
 
   
Latest prediction indicate maximum in August 2025. Norhtern hemisphere may even have had its maximum already.  
We see a fairly flat maximum where spring and summer 2025 may have max.-activity. Updates will come.  
   
We reckon there have passed 1633 days of the new cycle by this issue on 15 May 2024.  
   
Reports on massive auroras, even the more rare red auroras have been reported far south in Europe and US.  
The appearance of region 3664 and heavy flare activity and radio storms are future promising!  
   
Solar Flux onset 13 rot. ctrd. on 30 Sep 2022, next was offset min. 13 rot. On 24 Apr 2024.  
The offset in April should now indicate the road towards maximum in 2025!  
   
Please remember you are always welcome to contribute with drawings and photos!  
   
Need for new members!  Do you know any amateur solar astronomer that know or like to learn classifications?
Then please pass the information about CV-Helios Network's work and contact cvhelios@gmail.com  
Co-worker/assistant at CV-Helios Network? Please contact CV-Helios Network if this is something for you!  
   
Supergroups-catalogue:  
CV-Helios Network is currently working on a catalogue with drawings or photos  
of the, currently 861 sunspot regions that exceeded 1000 mvh  
in the period of RGO-USAF tables, that is, from 1874 to the current year.  
Drawings or photos will be collected from the archives of wellknown different observatories!  
Hopefully this catalogue will be published in 2025!  Stay tuned!  
   
 
   
             
Pictures from last month - Observer contributions, etc.        
  Photo courtesy: Thanks to CV-135 Gema Araujo, Spain Highlights May 2024