[Ips-dhfpr] ASWFC Daily HF Prop Report - 20 February 25 issued 2331 UT on 20 Feb 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Fri Feb 21 10:31:05 AEDT 2025
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 FEBRUARY 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (20 FEBRUARY)
Date T index Conditions
20 Feb 155 Normal
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 25% during local day.
Enhanced by 60% 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 during local day.
Enhanced by 20% during local night.
Southern Australian Region:
Enhanced by 20% during local day.
Near predicted monthly values 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
Jan 124
Feb 118
Mar 115
2. FORECAST (21 FEBRUARY - 23 FEBRUARY)
Date T index Conditions MUFs
21 Feb 145 Normal Near to 15% above predicted
monthly values
22 Feb 145 Normal Near to 15% above predicted
monthly values
23 Feb 145 Normal Near to 15% above predicted
monthly values
COMMENT: Maximum usable frequencies (MUFs) on UT day 20-Feb in
the Australian region were near predicted monthly to 20% enhanced.
Mild spread F was observed during local night hours at Canberra
and Hobart. Ionospheric equatorial scintillation was observed
at Weipa during the interval 20/1053-1110UT. MUFs are expected
to be near predicted monthly values to 15% enhanced over 21-23
Feb.
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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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