[Ips-dhfpr] SWS Daily HF Prop Report - 13 April 22 issued 2330 UT on 13 Apr 2022 [SEC=OFFICIAL]
Regional Warning Centre
rwc at ips.gov.au
Thu Apr 14 09:30:48 EST 2022
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 APRIL 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (13 APRIL)
Date T index Conditions
13 Apr 66 Normal
Flares: none.
MUFs:
Cocos Island Region:
Enhanced by 20% during local day.
Near predicted monthly values during local night.
Enhanced by 20% after local dawn.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Enhanced by 25% during local day.
Enhanced by 15% during local night.
Enhanced by 25% after local dawn.
Southern Australian Region:
Mostly near predicted monthly values.
Enhanced 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
Mar 64
Apr 46
May 49
2. FORECAST (14 APRIL - 16 APRIL)
Date T index Conditions MUFs
14 Apr 65 Normal-fair Near to 15% above predicted
monthly values, depressions
possible late in UT Day.
15 Apr 35 Fair-normal Depressed 10 to 20%/near predicted
monthly values
16 Apr 60 Normal Near predicted monthly values
COMMENT: SWS Preliminary HF Communications Warning 33 was issued
on 12 April and is current for 13-15 Apr. Maximum usable frequencies
(MUFs) on UT day 13 Apr were near monthly predicted values to
slightly enhanced. Forecast degraded conditions have not eventuated,
however mild to moderate MUF depressions are still expected at
high to mid latitude regions from late 14 Apr due to the anticipated
arrival of coronal mass ejection observed on 11 Apr.
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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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