[Ips-dhfpr] SWS Daily HF Prop Report - 21 December 20 issued 2340 UT on 21 Dec 2020
rwc
rwc at ips.gov.au
Tue Dec 22 10:40:50 EST 2020
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 DECEMBER 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 DECEMBER)
Date T index Conditions
21 Dec -2 Normal
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
No data available.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Mostly near predicted monthly values.
Depressed by 20% after local dawn.
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 -6
Dec 5
Jan 8
2. FORECAST (22 DECEMBER - 24 DECEMBER)
Date T index Conditions MUFs
22 Dec -10 Normal Near predicted monthly values
with possible mild depressions.
23 Dec -15 Normal-fair Near predicted monthly values
with possible mild depressions
24 Dec -25 Normal Near predicted monthly values/depressed
15 to 30%
COMMENT: MUFs in the Australian region were mostly near predicted
monthly values on UT day 21 Dec. Frequent strong sporadic E were
observed over some Australian sites. MUFs in the Australian region
are expected to be mostly near predicted monthly values to mildly
depressed for the next two UT days, 22-23 Dec, with moderate
depressions possible on 24 Dec in response to the anticipated
geomagnetic disturbance associated with the coronal hole.
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For an explanation of some of the terms in this report, go to
http://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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Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
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