[Ips-dhfpr] SWS Daily HF Prop Report - 30 January 19 issued 2330 UT on 30 Jan 2019 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Thu Jan 31 10:30:21 EST 2019
SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 JANUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (30 JANUARY)
Date T index Conditions
30 Jan -19 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Depressed by 35% during local day.
Enhanced by 20% during local night.
Northern Australian Region:
Depressed by 25% during local day.
Near predicted monthly values during local night.
Southern Australian Region:
Depressed by 15% 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
Dec -32
Jan -12
Feb -13
2. FORECAST (31 JANUARY - 02 FEBRUARY)
Date T index Conditions MUFs
31 Jan -20 Normal-fair Near predicted monthly values/depressed
10 to 20%
01 Feb -30 Fair-normal Near predicted monthly values/depressed
10 to 30%
02 Feb -30 Fair-normal Near predicted monthly values/depressed
10 to 30%
COMMENT: On UT day 30 January, MUFs were slightly depressed to
near monthly predicted levels over most Australian region while
the Niue Island region had Moderate MUF depressions during the
local day. Sporadic E layers were over some Australian ionosonde
stations. Near predicted to slightly depressed MUFs are expected
for today UT day 31 January. Slightly stronger depressions may
be observed on UT days 01-02 February as a consequence of very
low levels of ionising radiation from the Sun and the forecasted
geomagnetic activity associated with the 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
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