[Ips-dhfpr] IPS Daily HF Prop Report - 30 July 05
rwc
rwc at ips.gov.au
Sun Jul 31 09:58:11 EST 2005
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 30/2330Z JULY 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (30 JULY)
Date T index Conditions
30 Jul 40 Normal
Flares Max Fadeout Freq. Sectors
X1.3 0636UT probable all Mid East/Indian
MUFs:
Equatorial PNG Region:
Enhanced by 15% during local day,
Near predicted monthly values during local night.
Enhanced by 20% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base):
Proton event in progress, increased absorption observed.
PCA Event : 10Mev Proton/PCA Event Began 27 07 2005 2325UT and is in progress
Predicted Monthly T index for July: 27
2. FORECAST (31 JULY - 02 AUGUST)
Date T index Conditions MUFs
31 Jul 45 Normal Near predicted monthly values
01 Aug 20 Fair near predicted monthly values/depressed
10 to 20%
02 Aug 45 Normal Near predicted monthly values
COMMENT: Mostly normal HF conditions observed equatorial/N Aus
regions. Expect periods of degradation S Aus/NZ regions on days
two and three due to geomagnetic activity associated with a minor
solar wind shock. Proton event following recent flare activity
is still in progress, and may be sustained by further observed
solar flare activity. Isolated radio fadeouts possible during
local day over the next week due to returning active solar region.
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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->
Gloassary on Solar Terrestrial Terms.
IPS Radio and Space Services | email: asfc at ips.gov.au
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