[Ips-dhfpr] SWS Daily HF Prop Report - 18 April 20 issued 2331 UT on 18 Apr 2020
Regional Warning Centre
rwc at ips.gov.au
Sun Apr 19 09:31:28 EST 2020
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 APRIL 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (18 APRIL)
Date T index Conditions
18 Apr 3 Normal
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 80% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 35% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 30% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 30% during local night.
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 1
Apr -14
May -14
2. FORECAST (19 APRIL - 21 APRIL)
Date T index Conditions MUFs
19 Apr 0 Normal Near predicted monthly values
20 Apr 0 Normal Near predicted monthly values
21 Apr 0 Normal Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) were near predicted
monthly values with periods of minor to significant enhancements
for the Australian region on UT day, 18 Apr. Sporadic-E was observed
at Niue 03-17 UT, Darwin and Townsville 07-10 UT, Sydney 01-05
UT and 14-16 UT, Canberra 12-18 UT. Spread F observed at Cocos
16-20 UT, Norfolk 12-18 UT. MUFs in the Australian regions are
expected to be mostly near predicted monthly values for the next
three days, 19 to 21 Apr with possible mild depressions in MUFs
on 21 Apr.
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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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