[Ips-dhfpr] IPS Daily HF Prop Report - 24 July 15 issued 2337 UT on 24 Jul 2015
rwc
rwc at ips.gov.au
Sat Jul 25 09:37:56 EST 2015
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 JULY 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (24 JULY)
Date T index Conditions
24 Jul 44 Fair-normal
Flares: none.
MUFs:
Cocos Island Region:
No data available.
Niue Island Region:
Depressed by 25% during local day and
after local dawn.
Depressed by 40% during local night.
Northern Australian Region:
Depressed by 25% during local day and
after local dawn.
Depressed by 40% during local night.
Southern Australian and New Zealand Region:
Depressed by 25% during local day and
after local dawn.
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Extended periods of disturbance over the UT day.
PCA Event : No event.
Monthly T index:
Month T index
Jun 70
Jul 84
Aug 82
2. FORECAST (25 JULY - 27 JULY)
Date T index Conditions MUFs
25 Jul 50 Normal 15 to 30% below predicted monthly
values
26 Jul 50 Normal 15 to 30% below predicted monthly
values
27 Jul 55 Normal Depressed 20%/near predicted
monthly values
COMMENT: IPS HF Communications Warning 26 was issued on 23 July
and is current for 24-26 Jul. IPS HF Warning 15/26 has been issued
as a continuation of HF Warning 15/25. MUF depressions of up
to 40% have been seen across much of the Australasian region
over the last 24 hours. These conditions are due to low levels
of ionising solar flux. Disturbed conditions also observed Antarctic
region due to elevated geomagnetic activity. Further disturbance
expected days one and two of the forecast period. Slowly increasing
solar X-ray flux may result in some MUF recovery by day three.
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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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