[Ips-dhfpr] ASWFC Daily HF Prop Report - 24 July 23 issued 2330 UT on 24 Jul 2023 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Tue Jul 25 09:30:52 EST 2023
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (24 JULY)
Date T index Conditions
24 Jul 115 Normal
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 20% during local day.
Enhanced by 70% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Enhanced by 25% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Enhanced by 15% during local day.
Enhanced by 20% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 15% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Jun 98
Jul 91
Aug 88
2. FORECAST (25 JULY - 27 JULY)
Date T index Conditions MUFs
25 Jul 115 Normal Near to 15% above predicted
monthly values
26 Jul 110 Normal Near to 15% above predicted
monthly values
27 Jul 110 Normal-fair Near to 15% above predicted
monthly values
COMMENT: ASWFC SWF HF Communications Warning 69 was issued on
22 July and is current for 23-25 Jul. Maximum usable frequencies
(MUFs) on UT day 24-Jul were generally near predicted monthly
values to 20% enhanced in the southern Australian region. Spread
F was observed at Hobart and Learmonth during local night hours.
MUFs are expected to be near predicted monthly values to 15%
enhanced over 25-27 Jul. 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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