[Ips-dhfpr] ASWFC Daily HF Prop Report - 02 June 25 issued 2331 UT on 02 Jun 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Tue Jun 3 09:31:15 AEST 2025
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/02 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (02 JUNE)
Date T index Conditions
02 Jun 99 Fair
Flares Max Fadeout Freq. Sectors
M3.3 1119UT possible lower European
M1.1 2142UT possible lower East Pacific/
North American
MUFs:
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.
PCA Event : 10MeV Proton/PCA Event Began at 1700UT 31/05, Ended at 2035UT 01/06
and, 10MeV Proton/PCA Event Began at 2135UT 01/06, Ended at 2215UT 01/06
Monthly T index:
Month T index
May 94
Jun 109
Jul 107
2. FORECAST (03 JUNE - 05 JUNE)
Date T index Conditions MUFs
03 Jun 90 Fair-poor Near predicted monthly values
04 Jun 90 Normal-fair Near predicted monthly values
05 Jun 90 Normal-fair Near predicted monthly values
COMMENT: ASWFC Preliminary HF Communications Warning 56 was issued
on 31 May and is current for 2-4 Jun. Maximum usable frequencies
(MUFs) in the Australian region on UT day 02-Jun were near predicted
monthly values with depressions of up to 40% observed during
local night in the southern Australian region. Spread F was observed
at Hobart during local night hours. MUFs are expected to be mostly
near predicted monthly values with depressions during local night
possible at higher latitudes over 03-05 Jun. Shortwave fadeouts
are possible.
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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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