[Ips-dhfpr] ASWFC Daily HF Prop Report - 15 July 23 issued 2331 UT on 15 Jul 2023 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Sun Jul 16 09:31:01 EST 2023
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 JULY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 JULY)
Date T index Conditions
15 Jul 117 Normal
Flares Max Fadeout Freq. Sectors
M2.9 0741UT possible lower Mid East/Indian
M1.0 0953UT possible lower Mid East/Indian
M2.2 1010UT possible lower European
MUFs:
Cocos Island Region:
Enhanced by 30% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 25% during local night.
Northern Australian Region:
Mostly near predicted monthly values.
Southern Australian Region:
Enhanced by 20% during local day.
Near predicted monthly values during local night.
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 (16 JULY - 18 JULY)
Date T index Conditions MUFs
16 Jul 110 Normal Near to 15% above predicted
monthly values
17 Jul 105 Normal-fair Near predicted monthly values
18 Jul 100 Normal Near predicted monthly values
COMMENT: ASWFC SWF HF Communications Warning 65 was issued on
14 July and is current for 14-16 Jul. Maximum usable frequencies
(MUFs) on UT day 15-Jul in the Australian region were generally
near predicted monthly values to 20% enhanced in southern Australian
regions. Spread F was observed during local night hours across
the Australian region with stronger occurrences at higher latitudes.
MUFs are expected to be near predicted monthly values over 16-18
Jul, with enhancements of 15% on 16-Jul. 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
More information about the ips-dhfpr
mailing list