[Ips-dhfpr] IPS Daily HF Prop Report - 06 November 07
rwc
rwc at ips.gov.au
Wed Nov 7 10:28:22 EST 2007
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 06/2330Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (06 NOVEMBER)
Date T index Conditions
06 Nov -19 Normal-fair
Flares: none.
MUFs:
Equatorial PNG/Niue Region:
Near predicted monthly values during local day,
Depressed by 30% during local night.
Northern Australian Region:
Depressed by 20% during local day,
Depressed by 20% during local night.
Depressed by 25% after local dawn.
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):
Near predicted monthly values over the UT day.
PCA Event : No event.
Predicted Monthly T index for November: 11
2. FORECAST (07 NOVEMBER - 09 NOVEMBER)
Date T index Conditions MUFs
07 Nov -15 Normal-fair Near predicted monthly values
to 15-20% depressed.
08 Nov -15 Normal-fair Near predicted monthly values
to 10-15% depressed.
09 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. General depressions
in MUFs again observed across Pacific, Equatorial/PNG and Australian
regions due to lack of solar ionising EUV and active regions.
An anomaous enhancement was observed across the Australian sector
post dusk for 2-3 hours before local midnight. Depressions compared
with predicted monthly averages are expected to continue for
the next 2 days at least. Spread-F observed across wide regions,
particularly at night. A new solar Region 973 may increase ionisation
and MUFs over the next few days if it remains.
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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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