[Ips-whfpr] ASWFC Weekly Prop. Report (06 August 25) issued 0208 UT on 06 Aug 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Wed Aug 6 12:08:27 AEST 2025
SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT
ISSUED ON 06 AUGUST 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (30 JULY - 05 AUGUST)
Date T index Conditions
30 Jul 105 Normal
MUFS:
Cocos Island Region:
Enhanced by 15% during local day.
Near predicted monthly values 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.
31 Jul 102 Normal
MUFS:
Cocos Island Region:
Enhanced by 25% during local day.
Enhanced by 20% during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Depressed by 15% over the UT day.
01 Aug 94 Normal
MUFS:
Cocos Island Region:
Near predicted monthly values during local day.
Depressed by 20% 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.
02 Aug 99 Normal
MUFS:
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
03 Aug 101 Normal
MUFS:
Cocos Island Region:
Enhanced by 25% during local day.
Enhanced by 25% during local night.
Depressed by 30% after local dawn.
Niue Island Region:
Enhanced by 15% during local day.
Near predicted monthly values during local night.
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.
04 Aug 100 Normal
MUFS:
Cocos Island Region:
Enhanced by 55% during local day.
Enhanced by 20% 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.
05 Aug 95 Normal
MUFS:
Cocos Island Region:
Enhanced by 15% during local day.
Enhanced by 30% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Depressed by 25% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
Predicted Monthly T index for August: 96
2. FORECAST (06 AUGUST - 12 AUGUST)
MUFS:
MUFs near predicted monthly values throughout the week
with the slight chance of mild depressions in the southern
Australian region on 08-09 Aug.
Propagation conditions: Mostly normal HF propagation conditions
expected throughout the week with periods of fair conditions in
high latitudes. SWFs probable until 12-Aug.
T index: 96
ASWFC SWF HF Communications Warning 73 was issued on 4 August
and is current for 5-7 Aug.
It is expected that this warning will be extended beyond 7-Aug.
3. OUTLOOK (13 AUGUST - 12 SEPTEMBER)
Degraded HF propagation conditions possible:
18-19 Aug, 03-04 Sep
PLEASE NOTE:
Space weather conditions can frequently be determined by short
timescale events that cannot be forecast a week in advance,
particularly at solar maximum.
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
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