[Ips-dhfpr] SWS Daily HF Prop Report - 11 February 19 issued 2330 UT on 11 Feb 2019 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Tue Feb 12 10:30:20 EST 2019
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 FEBRUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (11 FEBRUARY)
Date T index Conditions
11 Feb -21 Normal-fair
Cocos Island Region:
Depressed by 25% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Depressed by 30% during local day.
Enhanced by 40% during local night.
Southern Australian Region:
Depressed by 15% during local day.
Depressed by 15% 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 (12 FEBRUARY - 14 FEBRUARY)
Date T index Conditions MUFs
12 Feb -20 Normal-fair Near predicted monthly values/depressed
10 to 20%
13 Feb -20 Normal-fair Near predicted monthly values/depressed
10 to 20%
14 Feb -20 Normal-fair Near predicted monthly values/depressed
10 to 20%
COMMENT: On UT day 11 February, MUFs were mostly depressed by
15% across Southern Australian region. Variable HF conditions
were observed in Northern Australian region with mild to moderate
MUF depressions during local day and enhancements during local
night. Minor to moderate MUF depressions and degradations in
HF conditions may be observed in the Aus/NZ regions during the
next three UT days, 12-14 February, due to continued very low
levels of ionising radiation from the Sun and some possibility
of slight rise in geomagnetic activity on UT days 12 and 13 February.
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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