[Ips-dhfpr] SWS Daily HF Prop Report - 20 February 21 issued 2331 UT on 20 Feb 2021
rwc
rwc at ips.gov.au
Sun Feb 21 10:31:39 EST 2021
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 FEBRUARY 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (20 FEBRUARY)
Date T index Conditions
20 Feb -16 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
Depressed by 45% during local day.
Depressed by 20% during local night.
Enhanced by 20% after local dawn.
Niue Island Region:
No data available.
Northern Australian Region:
Depressed by 15% during local day.
Near predicted monthly values during local night.
Southern Australian Region:
Depressed by 25% during local day.
Depressed by 20% during local night.
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
Jan 2
Feb 12
Mar 15
2. FORECAST (21 FEBRUARY - 23 FEBRUARY)
Date T index Conditions MUFs
21 Feb -15 Normal Depressed 15%/near predicted
monthly values
22 Feb -10 Normal Depressed 15%/near predicted
monthly values
23 Feb -5 Normal Near predicted monthly values
COMMENT: SWS HF Communications Warning 6 was issued on 19 February
and is current for 20-21 Feb. On UT day 20 February, MUFs in
the Australian region were moderately depressed to near predicted
monthly values. Sporadic E layers were observed, strong at times.
MUFs in the Australian region are expected to be depressed on
UT days 21-22 February in response to the current disturbed geomagnetic
conditions. Sporadic E occurrences are likely to continue.
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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
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