[Ips-dhfpr] IPS Daily HF Prop Report - 17 June 14 issued 2330 UT on 17 Jun 2014
Regional Warning Centre
rwc at ips.gov.au
Wed Jun 18 09:30:26 EST 2014
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 JUNE 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (17 JUNE)
Date T index Conditions
17 Jun 74 Normal
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values to 15% depressed
00-13, 22 UT. Depressed 20-40% at other times.
Niue Island Region:
Near predicted monthly values to 15% depressed.
Depressed by 25-30% 02, 07-13, 22 UT.
Northern Australian Region:
Near predicted monthly values. Depressed 35% at
Darwin 20-21 UT. Depressed 15-20% at Townsville
00-02, 05-08, 12-14, 21-23 UT.
Southern Australian and New Zealand Region:
Near predicted monthly values with occasional
depressions to 20%. Night spread F at Hobart.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values to 20% enhanced.
PCA Event : No event.
Monthly T index:
Month T index
May 80
Jun 92
Jul 91
2. FORECAST (18 JUNE - 20 JUNE)
Date T index Conditions MUFs
18 Jun 70 Normal Near predicted monthly values
to 20% depressed
19 Jun 70 Normal Near predicted monthly values
to 20% depressed
20 Jun 70 Normal Near predicted monthly values
to 20% depressed
COMMENT: IPS HF Communications Warning 30 was issued on 17 June
and is current for 17-19 Jun. Chance of sudden ionospheric disturbances
(SWFs) over the forecast period. Lower than expected solar flux
is likely to reduce MUFs below those based on the monthly T index,
particularly on circuits with southern hemisphere bases.
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
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