[Ips-dhfpr] SWS Daily HF Prop Report - 21 January 19 issued 2330 UT on 21 Jan 2019 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Tue Jan 22 10:30:25 EST 2019
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 JANUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 JANUARY)
Date T index Conditions
21 Jan -24 Normal
Flares: none.
MUFs:
Cocos Island Region:
Depressed by 30% during local day.
Near predicted monthly values during local night.
Niue Island Region:
Depressed by 45% during local day.
Near predicted monthly values during local night.
Northern Australian Region:
Depressed by 30% during local day.
Depressed by 20% during local night.
Southern Australian Region:
Near predicted monthly values.
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
Dec -32
Jan -12
Feb -13
2. FORECAST (22 JANUARY - 24 JANUARY)
Date T index Conditions MUFs
22 Jan -25 Normal Near predicted monthly values
23 Jan -35 Normal Depressed 15%/near predicted
monthly values
24 Jan -25 Normal Near predicted monthly values
COMMENT: On UT day 21 January, MUFs were moderately depressed
to mostly near predicted monthly values across the Australian
region. Sporadic E layers were seen across the Australian region.
Near predicted to moderately depressed MUFs are expected for
today (UT day 22 January), as a consequence of very low levels
of ionising radiation from the Sun. Slightly stronger depressions
are expected on UT day 23 January due to the forecasted geomagnetic
activity associated with the approaching coronal hole effects.
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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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