[Ips-dhfpr] ASWFC Daily HF Prop Report - 28 July 23 issued 2332 UT on 28 Jul 2023 [SEC=OFFICIAL]
rwc
rwc at ips.gov.au
Sat Jul 29 09:32:16 EST 2023
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (28 JULY)
Date T index Conditions
28 Jul 101 Normal-fair
Flares Max Fadeout Freq. Sectors
M1.7 27/2235UT possible lower East Pacific/
North American
M4.1 1558UT possible lower South American/
Atlantic
MUFs:
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Enhanced by 55% 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
Jun 98
Jul 91
Aug 88
2. FORECAST (29 JULY - 31 JULY)
Date T index Conditions MUFs
29 Jul 105 Normal Near predicted monthly values
30 Jul 105 Normal Near predicted monthly values
31 Jul 10 Normal Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) on UT day 28-Jul were
mostly near predicted values. Spread-F was observed at Perth
and Canberra during local night hours. MUFs are expected to bear
near predicted values over 29-31 Jul. A slight chance for polar
cap absorption (PCA) due to a possible S1 event may cause minor
MUF depressions at high latitudes. 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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