[Ips-dhfpr] SWS Daily HF Prop Report - 12 February 19 issued 2330 UT on 12 Feb 2019 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Wed Feb 13 10:30:20 EST 2019
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/12 FEBRUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (12 FEBRUARY)
Date T index Conditions
12 Feb -22 Normal
Flares: none.
MUFs:
Cocos Island Region:
Depressed by 15% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Mostly near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 40% during local night.
Southern Australian Region:
Depressed by 20% during local day.
Depressed by 25% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 15% over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Jan -27
Feb -12
Mar -13
2. FORECAST (13 FEBRUARY - 15 FEBRUARY)
Date T index Conditions MUFs
13 Feb -20 Normal-fair Near predicted monthly values/depressed
10 to 25%
14 Feb -20 Normal-fair Near predicted monthly values/depressed
10 to 25%
15 Feb -20 Normal-fair Near predicted monthly values/depressed
10 to 25%
COMMENT: On UT day 12 February, MUFs were mostly depressed by
20-25% across Southern Australian region. Near predicted monthly
values and enhanced MUFs were observed in Northern Australian
region. Similar HF conditions are expected for the Aus/NZ regions
during the next three UT days, 13-15 February. Expected depressions
are due to continued very low levels of ionising radiation from
the Sun and some possibility of slight rise in geomagnetic activity
on UT days 13 and 14 February.
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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
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Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
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