[Ips-dhfpr] IPS Daily HF Prop Report - 05 November 07
rwc
rwc at ips.gov.au
Tue Nov 6 10:44:32 EST 2007
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 05/2330Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (05 NOVEMBER)
Date T index Conditions
05 Nov -13 Normal-fair
Flares: none.
MUFs:
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Depressed by 20% during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Depressed by 15% during local night.
Southern Australian and New Zealand Region:
Mostly 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 (06 NOVEMBER - 08 NOVEMBER)
Date T index Conditions MUFs
06 Nov -12 Normal-fair Near predicted monthly values
to 20% depressed.
07 Nov -10 Normal-fair Near predicted monthly values
to 10-15% depressed.
08 Nov -10 Normal-fair Near predicted monthly values
to 10-15% depressed.
COMMENT: IPS HF Communications Warning 27 was issued on 4 November
and is current for interval 5-7 November. Depressions in Maximum
Usable Frequencies (MUFs) observed across Pacific, Equatorial/PNG
and Australian regions due to lack of solar ionising EUV and
active regions. Slightly eased from previous days as geomagnetic
conditions quieten after coronal hole passed. Depressions compared
with predicted monthly averages are expected to continue for
the next 2 days at least. Spread-F observed across wide regions,
particularly pre-dawn.
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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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