[Ips-dhfpr] SWS Daily HF Prop Report - 19 April 20 issued 2331 UT on 19 Apr 2020
Regional Warning Centre
rwc at ips.gov.au
Mon Apr 20 09:31:24 EST 2020
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 APRIL 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (19 APRIL)
Date T index Conditions
19 Apr 1 Normal
Cocos Island Region:
Enhanced by 35% during local day.
Enhanced by 135% during local night.
Niue Island Region:
No data available.
Northern Australian Region:
Depressed by 20% during local day.
Enhanced by 30% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values during daytime.
Very weak F region at night.
PCA Event : No event.
Monthly T index:
Month T index
2. FORECAST (20 APRIL - 22 APRIL)
Date T index Conditions MUFs
20 Apr 0 Normal Near predicted monthly values
21 Apr -5 Normal Near predicted monthly values
22 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, 19 Apr. Hobart ionosphere
very weak 16-20 UT. Sporadic-E was observed at Cocos 13-23 UT,
Brisbane and Norfolk 00-03, 19-23 UT, Learmonth 10-18 UT, Sydney
12-17, 20-23 UT. Spread F observed at Townsville and Brisbane
13-18 UT, Learmonth 19-22 UT. MUFs in the Australian regions
are expected to be mostly near predicted monthly values for the
next three days, 20 to 22 Apr with possible mild depressions
in MUFs on 21 Apr.
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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