[Ips-dhfpr] IPS Daily HF Prop Report - 08 November 07
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
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.
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
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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