[Ips-wsgr] ASWFC Weekly Solar and Geophysical Report (08 September 23) issued 0058 UT on 08 Sep 2023 [SEC=OFFICIAL]

[rwc]

SUBJ: ASWFC WEEKLY SOLAR AND GEOPHYSICAL REPORT 
ISSUED ON 08 SEPTEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx

1. SUMMARY (01 SEPTEMBER - 07 SEPTEMBER)
Date     01    02    03    04    05    06    07
10cm    136   131   131   136   143   147   161
AFr      15    25    28    14    14    10  (  7)
Aaus     10    24    13     4     9     5  (  3)
T       117   109    76    92    92   102   114

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

01 Sep 
Solar:        R1, with an M1.1 at 0351UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 15-40%.
   Northern Australian Region:
      Enhanced by 20%.
   Southern Australian Region:
      Enhanced by 15-20%.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 15% over the UT day.

02 Sep 
Solar:        R1, with an M3.3 at 0713UT
Geomagnetic:  G1
Frequencies:  
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Enhanced by 35% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced 15% after local dawn.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Depressed 15-20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day,
      with spread F observed,

03 Sep 
Solar:        R2, with an M1.1 at 0023UT, and an M6.0 at 0836UT
Geomagnetic:  G0
In the BOM magnetometer data for 03 Sep, a weak (8nT) impulse 
was observed at 0320UT.
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Enhanced by 20-30%.
   Northern Australian Region:
      Near predicted monthly values to 15% enhanced.
   Southern Australian Region:
      Depressed by 20-25% local day.
      Near predicted monthly values to 15-20% depressed,
      local night.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 35% over the UT day.

04 Sep 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 20% over the UT day.

05 Sep 
Solar:        R1, with an M2.0 at 0812UT, an M1.2 at 1945UT, 
              and an M1.0 at 2339UT
Geomagnetic:  G0
In the BOM magnetometer data for 05 Sep, a weak (10nT) impulse 
was observed at 1525UT.
Frequencies:  
   Cocos Island Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 80% 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.

06 Sep 
Solar:        R0
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 50% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

07 Sep 
Solar:        R1, with an M2.1 at 1909UT
Geomagnetic:  G0
Frequencies:  
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Enhanced by 55% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Enhanced by 15% over the UT day.

 
2. FORECAST (08 SEPTEMBER - 14 SEPTEMBER)
Solar: R0-R1, slight chance of R2.

Geomagnetic: G0-G1 on 10-Sep, otherwise G0.
A glancing blow from a solar filament eruption
on 07-Sep, may cause a minor increase in geomagnetic 
activity on 10-Sep.

Frequencies:  MUFs near predicted monthly values.
Isolated minor fadeouts possible. Chance of mild degradation 
in HF conditions during local night hours for the southern 
Australian region on 10-Sep.


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