[Ips-dhfpr] ASWFC Daily HF Prop Report - 30 May 23 issued 2331 UT on 30 May 2023 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Wed May 31 09:31:14 EST 2023
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 MAY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (30 MAY)
Date T index Conditions
30 May 86 Normal
Flares Max Fadeout Freq. Sectors
M1.2 0810UT possible lower Mid East/Indian
M1.3 1022UT possible lower European
M1.4 1338UT possible lower European
MUFs:
Cocos Island Region:
Enhanced by 35% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Enhanced by 20% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Apr 120
May 87
Jun 88
2. FORECAST (31 MAY - 02 JUNE)
Date T index Conditions MUFs
31 May 85 Normal Near predicted monthly values
01 Jun 90 Normal Near predicted monthly values
02 Jun 90 Normal Near predicted monthly values
COMMENT: ASWFC SWF HF Communications Warning 52 was issued on
28 May and is current for 29-31 May. Maximum usable frequencies
(MUFs) on UT day 30-May were mostly near predicted monthly values.
Spread-F was observed in Hobart. Degraded conditions were observed
in Brisbane and Darwin during local night hours. MUFs are expected
to be near predicted monthly values over 31-May to 02-Jun. Isolated
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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