[Ips-dhfpr] ASWFC Daily HF Prop Report - 18 September 22 issued 2330 UT on 18 Sep 2022 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Mon Sep 19 09:30:58 EST 2022
SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 SEPTEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (18 SEPTEMBER)
Date T index Conditions
18 Sep 88 Normal
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 45% during local day.
Enhanced by 65% during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Southern Australian Region:
Enhanced by 15% during local day.
Enhanced by 20% 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
Aug 53
Sep 68
Oct 69
2. FORECAST (19 SEPTEMBER - 21 SEPTEMBER)
Date T index Conditions MUFs
19 Sep 80 Normal-fair Near predicted monthly values
to 15% enhanced
20 Sep 75 Normal Near predicted monthly values
to 15% enhanced
21 Sep 70 Normal Near predicted monthly values
to 15% enhanced
COMMENT: ASWFC SWF HF Communications Warning 71 was issued on
17 September and is current for 18-19 Sep. Maximum usable frequencies
(MUFs) on UT dau 18-Sep were 15-20% enhanced during the local
day and night. Sporadic-E was observed at Darwin and Townsville
during local night. Regional MUFs are expected to be near predicted
monthly values to 15% enhanced over 19-21 Sep, with mild depressions
possible during local night due to coronal hole high speed wind
stream effects.
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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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