[Ips-dhfpr] ASWFC Daily HF Prop Report - 11 April 25 issued 2331 UT on 11 Apr 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Sat Apr 12 09:31:19 AEST 2025
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 APRIL 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (11 APRIL)
Date T index Conditions
11 Apr 132 Normal
Flares Max Fadeout Freq. Sectors
M1.0 1650UT possible lower South American/
Atlantic
M1.0 2220UT possible lower East Pacific/
North American
MUFs:
Cocos Island Region:
Enhanced by 30% during local day.
Enhanced by 40% during local night.
Niue Island Region:
Enhanced by 20% during local day.
Near predicted monthly values during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Depressed by 15% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Mar 126
Apr 115
May 113
2. FORECAST (12 APRIL - 14 APRIL)
Date T index Conditions MUFs
12 Apr 135 Normal Near predicted monthly values
to 15% enhanced
13 Apr 140 Normal Near predicted monthly values
to 15% enhanced
14 Apr 140 Normal Near predicted monthly values
to 15% enhanced
COMMENT: ASWFC SWF HF Communications Warning 36 was issued on
10 April and is current for 11-13 Apr. Maximum usable frequencies
(MUFs) on UT day 11-Apr were near predicted values in the Australian
region. Spread F was observed in Hobart during local dawn hours.
MUFs are expected to be near predicted values to 15% enhanced
over 12-14 Apr.
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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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