[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 June 25 issued 2331 UT on 06 Jun 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Sat Jun 7 09:31:15 AEST 2025
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (06 JUNE)
Date T index Conditions
06 Jun 69 Fair-normal
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values during local day.
Depressed by 20% during local night.
Niue Island Region:
Depressed by 15% during local day.
Depressed by 20% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 40% during local night.
Southern Australian Region:
Depressed by 15% during local day.
Depressed by 25% during local night.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
May 94
Jun 109
Jul 107
2. FORECAST (07 JUNE - 09 JUNE)
Date T index Conditions MUFs
07 Jun 90 Fair-normal Depressed 15%/near predicted
monthly values
08 Jun 90 Fair-normal Depressed 15%/near predicted
monthly values
09 Jun 90 Fair-normal Depressed 15%/near predicted
monthly values
COMMENT: ASWFC HF Communications Warning 59 was issued on 6 June
and is current for 6-7 Jun. Maximum usable frequencies (MUFs)
in the southern Australian region on UT day 06-Jun were depressed
by up to 25%. MUFs in the northern Australian region were near
predicted monthly values to depressed by 40% during local night.
Spread F was observed at Hobart, Townsville and Darwin during
local night hours. MUFs are expected to be mildly depressed by
15% to near predicted monthly values over 07-09 Jun.
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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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