[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 April 23 issued 2330 UT on 16 Apr 2023 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Mon Apr 17 09:30:15 EST 2023
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 APRIL 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (16 APRIL)
Date T index Conditions
16 Apr 123 Normal
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 40-90%
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 30% during local night.
Northern Australian Region:
Enhanced by 15-35%
Southern Australian Region:
Enhanced by 15-30%
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 15% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Mar 132
Apr 84
May 84
2. FORECAST (17 APRIL - 19 APRIL)
Date T index Conditions MUFs
17 Apr 125 Normal 15-30% above predicted monthly
values
18 Apr 125 Normal 15-30% above predicted monthly
values
19 Apr 125 Normal 15-30% above predicted monthly
values
COMMENT: ASWFC SWF HF Communications Warning 37 was issued on
16 April and is current for 17-19 Apr. Maximum usable frequencies
(MUFs) on UT day 16-Apr in the Australian region were enhanced
by 15-90%. Strong enhancements were observed at Cocos Island.
Spread F was observed during local night hours at Hobart. MUFs
are expected to be 15-30% enhanced over 17-19 Apr. Isolated shortwave
fadeouts are possible. Mildly degraded conditions possible local
night hours on 19-Apr, for southern Australian region due to
possible arrival of a weak CME component.
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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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