[Ips-dhfpr] ASWFC Daily HF Prop Report - 19 May 24 issued 2330 UT on 19 May 2024 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Mon May 20 09:30:48 EST 2024
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 MAY 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (19 MAY)
Date T index Conditions
19 May 149 Normal
Flares Max Fadeout Freq. Sectors
M1.9 1344UT possible lower European
M2.5 1756UT possible lower South American/
Atlantic
M1.6 2159UT possible lower East Pacific/
North American
MUFs:
Cocos Island Region:
Enhanced by 20% during local day.
Enhanced by 65% 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 25% during local night.
Southern Australian Region:
Enhanced by 15% 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
Apr 125
May 114
Jun 116
2. FORECAST (20 MAY - 22 MAY)
Date T index Conditions MUFs
20 May 145 Normal Near to 15% above predicted
monthly values
21 May 145 Normal Near to 15% above predicted
monthly values
22 May 145 Normal Near to 15% above predicted
monthly values
COMMENT: ASWFC SWF HF Communications Warning 54 was issued on
19 May and is current for 20-22 May. Maximum usable frequencies
(MUFs) on UT day 19-May were near predicted monthly values to
25% enhanced in Northern Australia. Spread F was observed at
Hobart during local night hours. Ionospheric scintillation was
observed at Darwin and Weipa from 19/1142-1610UT. MUFs are expected
to be near predicted monthly values to 15% enhanced over 20-22
May. 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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