[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 December 24 issued 2330 UT on 16 Dec 2024 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Tue Dec 17 10:30:44 AEDT 2024
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 DECEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (16 DECEMBER)
Date T index Conditions
16 Dec 115 Fair
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 25% during local day.
Enhanced by 15% during local night.
Niue Island Region:
Enhanced by 15% during local day.
Depressed by 15% during local night.
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.
PCA Event : No event.
Monthly T index:
Month T index
Nov 127
Dec 117
Jan 114
2. FORECAST (17 DECEMBER - 19 DECEMBER)
Date T index Conditions MUFs
17 Dec 120 Fair Near predicted monthly values
18 Dec 120 Normal-fair Near predicted monthly values
19 Dec 130 Normal Near predicted monthly values
COMMENT: ASWFC SWF HF Communications Warning 144 was issued on
15 December and is current for 15-17 Dec. Maximum usable frequencies
(MUFs) in the Australian region on UT day 16-Dec were mostly
near predicted monthly values. Sporadic E was observed at Perth
and Townsville during local night. Spread F was observed at Hobart
during local night. MUFs are expected to be near predicted monthly
vales over 17-19 Dec, with mild depressions possible on 17-18
Dec due to anticipated geomagnetic activity. Sporadic E is more
likely to be observed around the Australian region over December
than at other times of the year. Shortwave fadeouts are possible.
----------------------------------------------------------
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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