[Ips-dhfpr] SWS Daily HF Prop Report - 04 February 22 issued 2331 UT on 04 Feb 2022
Regional Warning Centre
rwc at ips.gov.au
Sat Feb 5 10:31:23 EST 2022
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 FEBRUARY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (04 FEBRUARY)
Date T index Conditions
04 Feb 49 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 40% during local night.
Niue Island Region:
Enhanced by 15% during local day.
Enhanced by 30% during local night.
Northern Australian Region:
Depressed by 30% during local day.
Enhanced by 30% during local night.
Depressed by 35% after local dawn.
Southern Australian Region:
Depressed by 20% during local day.
Near predicted monthly values during local night.
Depressed by 25% 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 46
Feb 38
Mar 41
2. FORECAST (05 FEBRUARY - 07 FEBRUARY)
Date T index Conditions MUFs
05 Feb 40 Normal-fair Depressed 15 to 30%/near predicted
monthly values
06 Feb 50 Normal-fair Depressed 15 to 20%/near predicted
monthly values
07 Feb 65 Normal Near to 15% above predicted
monthly values
COMMENT: SWS SWF HF Communications Warning 15 was issued on 4
February and is current for 4-6 Feb. Eastern Australian region
maximum usable frequencies (MUFs) were mostly depressed with
some enhancements during local night. Frequencies were enhanced
at Niue and in the western Australian region with depressions
at Learmonth and Perth just prior to local dawn onwards. Variable
conditions are likely 05-07 February with continuing geomagnetic
activity expected. Depressions likely at times at mid and high
latitudes. Isolated shortwave fadeouts are possible on daylight
HF circuits over the next few days.
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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
PO Box 1386 WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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