[Ips-dhfpr] SWS Daily HF Prop Report - 17 April 21 issued 2330 UT on 17 Apr 2021
Regional Warning Centre
rwc at ips.gov.au
Sun Apr 18 09:30:11 EST 2021
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 APRIL 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (17 APRIL)
Date T index Conditions
17 Apr 23 Normal
Flares: none.
MUFs:
Cocos Island Region:
No data
Niue Island Region:
No data
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Depressed by 30% during local day.
Enhanced by 25% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 30% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Mar 9
Apr 19
May 23
2. FORECAST (18 APRIL - 20 APRIL)
Date T index Conditions MUFs
18 Apr 5 Normal Near predicted monthly values/depressed
10 to 30%
19 Apr 0 Normal Near predicted monthly values
20 Apr 10 Normal Near predicted monthly values
COMMENT: SWS HF Communications Warning 11 was issued on 16 April
and is current for 17-18 Apr. MUFs over the Australian regions
were mostly near predicted monthly levels on UT day 17 April.
Mild to moderate MUFs depressions are likely for 18-19 April
due to the observed increase in geomagnetic activity.
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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
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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