[Ips-dhfpr] IPS Daily HF Prop Report - 15 December 06
rwc
rwc at ips.gov.au
Sat Dec 16 10:54:39 EST 2006
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 15/2330Z DECEMBER 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (15 DECEMBER)
Date T index Conditions
15 Dec -20 Fair
Flares Max Fadeout Freq. Sectors
M1.4 14/2300UT possible lower West Pacific
MUFs:
5 to 40% below predicted monthly values
PCA Event : Began at 0305UT 13/12, Ended at 1645UT 15/12
Predicted Monthly T index for December: 10
2. FORECAST (16 DECEMBER - 18 DECEMBER)
Date T index Conditions MUFs
16 Dec -20 Fair-poor 5 to 30% below predicted monthly
values
17 Dec -10 Fair 5 to 30% below predicted monthly
values
18 Dec -10 Fair 5 to 20% below predicted monthly
values
COMMENT: IPS HF Communications Warning 40 was issued on 15 December
and is current for interval 16-18 December (SWFs) . HF conditions
and MUFS throughout the UT day were highly variable with enhancements
from solar flare activity compounding with depressions due to
geomagnetic activity. Ionospheric support was generally weak
at all frequencies. HF conditions were fair to normal in Northern
Australian/Pacific regions and fair to poor in Southern Australian/New
Zealand regions throughout the UT day, recovering late in the
UT day with a decline in geomagnetic activity. Expect generally
fair conditions over Middle and Northern Australia and poor conditions
over Southern Australian regions over the next 48 hours with
continued high levels of geomagnetic activity.
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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
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp.ips.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
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