[Ips-dhfpr] IPS Daily HF Prop Report - 13 October 10
rwc
rwc at ips.gov.au
Thu Oct 14 10:36:32 EST 2010
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 13/2330Z OCTOBER 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (13 OCTOBER)
Date T index Conditions
13 Oct -3 Normal-fair
Flares: none.
MUFs:
Cocos Island Region:
Near predicted monthly values during local day,
Depressed by 35% during local night.
Niue Island Region:
Depressed by 20% during local day,
Depressed by 15% during local night.
Depressed by 30% after local dawn.
Northern Australian Region:
Depressed by 25% during local day,
Depressed by 20% during local night.
Southern Australian and New Zealand Region:
Depressed by 20% during local day,
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Depressed by 15% over the UT day.
PCA Event : No event.
Predicted Monthly T index for October: 30
2. FORECAST (14 OCTOBER - 16 OCTOBER)
Date T index Conditions MUFs
14 Oct 15 Normal 5 to 10% below predicted monthly
values
15 Oct 25 Normal 0 to 5% below predicted monthly
values
16 Oct 20 Normal about 5% below predicted monthly
values
COMMENT: IPS HF Communications Warning 16 was issued on 13 October
and is current for interval 13-14 October. MUFs at mid and low
latitudes continued to be strongly depressed over the UT day
as a result of the brief geomagnetic disturbance early in the
local morning of the 12th. Recovery to near monthly values in
the next day should be helped by low geomagnetic activity and
a new active region on the solar disc with more ionising radiation.
Another CME may strike a glancing blow during local day on the
15th with possible ionospheric depressions.
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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.
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
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