[Ips-dhfpr] IPS Daily HF Prop Report - 08 November 07
rwc
rwc at ips.gov.au
Fri Nov 9 10:27:11 EST 2007
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (08 NOVEMBER)
Date T index Conditions
08 Nov -8 Normal-fair
Flares: none.
MUFs:
Equatorial PNG/Niue Region:
No data available during local day,
No data available during local night.
Northern Australian Region:
Mostly near predicted monthly values,
Depressed by 20% after local dawn.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for November: 11
2. FORECAST (09 NOVEMBER - 11 NOVEMBER)
Date T index Conditions MUFs
09 Nov -10 Normal-fair Near predicted monthly values
to 15% depressed.
10 Nov -10 Normal-fair Near predicted monthly values
to 15% depressed.
11 Nov 0 Normal-poor Near predicted monthly values
to 10% depressed.
COMMENT: IPS HF Communications Warning 28 was issued on 7 November
and is current for interval 8-10 November. General depressions
in MUFs still observed across Australian/NZ region due to lack
of solar ionising EUV but slightly recovered compared with previous
days. Sonde coverage across PNG and Pacific is out but MUFs assumed
similarly affected. Spread F again widely observed. An anomalous
enhancement was again observed across the northern Australian
sector post for 2-3hours before local midnight but reduced compared
with previous days. Depressed MUFs compared with predicted monthly
averages are expected to continue for the next 2 days at least.
The possible onset of a coronal hole HSSWS over the weekend could
elevate geomagnetic activity and affect MUFs but expected to
only be moderate.
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For an explanation of some of the terms in this report, goto
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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