[Ips-dhfpr] SWS Daily HF Prop Report - 07 December 21 issued 2340 UT on 07 Dec 2021
rwc
rwc at ips.gov.au
Wed Dec 8 10:40:38 EST 2021
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 DECEMBER 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (07 DECEMBER)
Date T index Conditions
07 Dec 8 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Niue Island Region:
Mostly near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Depressed by 20% after local dawn.
Southern Australian Region:
Depressed by 20% during local day.
Depressed 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
Nov 3
Dec 33
Jan 36
2. FORECAST (08 DECEMBER - 10 DECEMBER)
Date T index Conditions MUFs
08 Dec 0 Normal-fair 15 to 20% below predicted monthly
values
09 Dec 0 Normal-fair 15 to 20% below predicted monthly
values
10 Dec 0 Normal-fair 15 to 20% below predicted monthly
values
COMMENT: SWS HF Communications Warning 37 was issued on 6 December
and is current for 7-9 Dec. MUFs in the Australian region on
UT day 7 December were generally near predicted monthly values
to mildly depressed, due to low levels of ionising solar flux.
Similar conditions are expected during 8-10 December.
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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.
Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
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