[Ips-dhfpr] ASWFC Daily HF Prop Report - 18 June 23 issued 2330 UT on 18 Jun 2023 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Mon Jun 19 09:30:13 EST 2023
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 JUNE 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (18 JUNE)
Date T index Conditions
18 Jun 100 Normal
Flares Max Fadeout Freq. Sectors
M1.3 0031UT possible lower West Pacific
M2.5 1353UT possible lower European
MUFs:
Cocos Island Region:
Enhanced by 25% during local day.
Enhanced by 20% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
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 (19 JUNE - 21 JUNE)
Date T index Conditions MUFs
19 Jun 105 Normal Near to 15% above predicted
monthly values
20 Jun 105 Normal Near to 15% above predicted
monthly values
21 Jun 105 Normal Near to 15% above predicted
monthly values
COMMENT: Maximum usable frequencies (MUFs) on UT day 18-Jun in
the Australian region were near predicted monthly values. Strong
spread F was observed at Hobart during local night hours. MUFs
are expected to be mostly near predicted values to 15% enhanced
over 19-21 Jun. Mildly degraded conditions may be experienced
during local night hours. 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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