[Ips-dhfpr] SWS Daily HF Prop Report - 20 February 18 issued 2330 UT on 20 Feb 2018 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Wed Feb 21 10:30:41 EST 2018
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 FEBRUARY 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (20 FEBRUARY)
Date T index Conditions
20 Feb -4 Normal
Flares: none.
MUFs:
Niue Island Region:
Enhanced by 25% during local day.
Near predicted monthly values during local night.
Depressed by 20% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values during local day.
Depressed by 20% 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
Jan -6
Feb 4
Mar 3
2. FORECAST (21 FEBRUARY - 23 FEBRUARY)
Date T index Conditions MUFs
21 Feb 4 Normal Near predicted monthly values
22 Feb 4 Normal Near predicted monthly values
23 Feb 4 Normal Near predicted monthly values
COMMENT: MUFs were mostly near predicted monthly values during
the UT day 20 Feb with isolated periods of depressions noted
over the Southern Australian region during local night time hours.
There were a few cases of Sporadic E blanketing over the Australian
ionosonde sites. For 21-23 Feb, MUFs are expected to be mostly
near predicted monthly values. Minor to moderate depressions
can occur, particularly in the Southern hemisphere as a consequence
of the recent minor increase in geomagnetic activity and low
EUV levels.
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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
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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