[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (29 August 25) issued 0235 UT on 29 Aug 2025 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 29 AUGUST 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (22 AUGUST - 28 AUGUST)
Date     22    23    24    25    26    27    28
10cm    136   143   152   175   202   226   232
AFr       9     7     0     8     8     9  (  8)
Aaus      5     2     2     4     4     4  (  4)
T        94    95    86    90   101   102   104

Solar:        Solar flare activity
Geomagnetic:  Geomagnetic activity observed for Australian region.
Frequencies:  Australian ionospheric F2 critical frequencies

22 Aug 
Solar:        R1, with an M1.7 at 1851UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

23 Aug 
Solar:        R1, with an M1.9 at 2006UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 45% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

24 Aug 
Solar:        R1, with an M1.3 at 0836UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

25 Aug 
Solar:        R1, with an M4.5 at 0524UT, and an M1.2 at 
              1518UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      No data available.
   Niue Island Region:Moderate
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

26 Aug 
Solar:        R1, with an M3.3 at 0030UT, an M4.5 at 0525UT, 
              and an M1.0 at 1407UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.
      Proton event in progress, increased absorption observed.

27 Aug 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

28 Aug 
Solar:        R1
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

 
2. FORECAST (29 AUGUST - 04 SEPTEMBER)
Solar: 
Solar activity is expected to be at the R1 level with a chance of R2 for the
forecasting period.
Flare activity may continue from Region AR4197 showing complex magnetic
complexity with growth development.


Geomagnetic:  
G0 conditions are expected over 29 Aug-04 Sep. 

Frequencies:  

MUFs near predicted monthly values on all days with brief shortwave fadeouts
possible.


For an explanation of some of the terms in this report, go to
https://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au