[Ips-dhfpr] ASWFC Daily HF Prop Report - 21 June 23 issued 2330 UT on 21 Jun 2023 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Thu Jun 22 09:30:14 EST 2023
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 JUNE)
Date T index Conditions
21 Jun 103 Normal
Flares Max Fadeout Freq. Sectors
M1.1 1244UT possible lower European
M1.0 1538UT possible lower South American/
Atlantic
MUFs:
Cocos Island Region:
Enhanced by 60% during local day.
Enhanced by 15% during local night.
Niue Island Region:
Enhanced by 15% during local day.
Depressed by 15% during local night.
Enhanced by 30% 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
May 98
Jun 88
Jul 87
2. FORECAST (22 JUNE - 24 JUNE)
Date T index Conditions MUFs
22 Jun 100 Normal Near predicted monthly values
23 Jun 100 Normal Near predicted monthly values
24 Jun 100 Normal Near predicted monthly values
COMMENT: ASWFC SWF HF Communications Warning 57 was issued on
21 June and is current for 21-23 Jun. Maximum usable frequencies
(MUFs) on UT day 21-Jun in the Australian region were generally
near predicted monthly values. Spread F was observed during local
night hours in Hobart and Perth. MUFs are expected to be near
predicted values over 22-24 Jun. Mildly degraded conditions are
possible during local night hours. Shortwave fadeouts are probable.
----------------------------------------------------------
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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