[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (06 June 25) issued 0155 UT on 06 Jun 2025 [SEC=OFFICIAL]

Fri Jun 6 11:55:58 AEST 2025

SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 06 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (30 MAY - 05 JUNE)
Date     30    31    01    02    03    04    05
10cm    157   164   150   140   135   134   128
AFr      18    12    59    69    58    26  ( 10)
Aaus     21     9    37    38    35    15  (  7)
T        86    84    96    99    60    57    62

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

30 May 
Solar:        R1, with an M3.4 at 0613UT, and an M1.6 at 
              1839UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      No data available during local day.
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

31 May 
Solar:        R2, with an M8.2 at 0005UT, an M2.4 at 0518UT, 
              an M4.5 at 0818UT, and an M2.9 at 1549UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Niue Island Region:
      No data available during local day.
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.
      Proton event in progress, increased absorption observed.

01 Jun 
Solar:        R0
Geomagnetic:  G2
In the BOM magnetometer data for 01 Jun, a weak (41nT) impulse 
was observed at 0543UT.
Frequencies:  
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      No data available during local day.
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

02 Jun 
Solar:        R1, with an M3.3 at 1119UT, and an M1.1 at 
              2142UT
Geomagnetic:  G2
In the BOM magnetometer data for 02 Jun, a weak (12nT) impulse 
was observed at 0716UT.
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 40% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
      Depressed by 40% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 25% over the UT day.

03 Jun 
Solar:        R1, with an M1.3 at 1259UT
Geomagnetic:  G2
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Depressed by 35% during local day.
      Depressed by 25% during local night.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 25% over the UT day.

04 Jun 
Solar:        R1, with an M1.1 at 2328UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 45% during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Depressed by 35% during local day.
      Depressed by 35% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

05 Jun 
Solar:        R1, with an M1.1 at 2328UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 40% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

2. FORECAST (06 JUNE - 12 JUNE)
Solar: 
R1 activity expected, with a chance of R2 for the first half of the week.
Activity is expected to decrease in the second half.

Geomagnetic:  
G0 geomagnetic conditions are generally expected throughout the week, with
a chance of G1 conditions on 06-Jun.

Frequencies:  
MUFs are expected to be depressed by up to 25%, with worse conditions in
the southern Australian region, on 06-Jun. Conditions are expected to 
recover towards monthly predicted values over the rest of the week.

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