[Ips-dhfpr] SWS Daily HF Prop Report - 31 October 19 issued 2331 UT on 31 Oct 2019
Regional Warning Centre
rwc at ips.gov.au
Fri Nov 1 10:31:40 EST 2019
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/31 OCTOBER 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (31 OCTOBER)
Date T index Conditions
31 Oct -38 Normal
Cocos Island Region:
Depressed by 50% during local day.
Depressed by 35% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Northern Australian Region:
Depressed by 20% during local day.
Depressed by 25% during local night.
Depressed by 20% after local dawn.
Southern Australian Region:
Depressed by 30% during local day.
Near predicted monthly values during local night.
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
2. FORECAST (01 NOVEMBER - 03 NOVEMBER)
Date T index Conditions MUFs
01 Nov -25 Normal Near predicted monthly values
02 Nov -25 Normal Near predicted monthly values
03 Nov -25 Normal Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region were moderately depressed to near predicted monthly values
during UT day 31 October. The depressions are thought to be due
to very low level of solar ionising flux. Sporadic-E and Spread-F
occurrences were observed over some sites. For the next 3 UT
days, 01-03 November, MUFs are expected to be between moderately
depressed to near predicted monthly values. Lower HF frequencies
will be less impacted.
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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