[Ips-dhfpr] IPS Daily HF Prop Report - 17 January 05
rwc at ips.gov.au
Tue Jan 18 10:18:13 EST 2005
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 17/2330Z JANUARY 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (17 JANUARY)
Date T index Conditions
17 Jan 40 Normal-fair
Flares Max Fadeout Freq. Sectors
X3/2F 0952UT probable all Mid East/Indian
Equatorial PNG Region:
Near predicted monthly values during local day,
Depressed by 25% during local night.
Depressed by 20% after local dawn.
Northern Australian Region:
Enhanced by 20% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Mostly near predicted monthly values,
Enhanced by 35% after local dawn.
Antarctic Region (Casey/Scott Base):
Proton event in progress, increased absorption observed.
PCA Event : 10Mev Proton/PCA Event Began 16 01 2005 0220UT and is in progress
Predicted Monthly T index for January: 32
2. FORECAST (18 JANUARY - 20 JANUARY)
Date T index Conditions MUFs
18 Jan 40 Normal-Fair near predicted monthly values/depressed
10 to 20%
19 Jan -10 Fair-poor 30 to 40% below predicted monthly
20 Jan 10 Poor-fair depressed 10 to 20%/near predicted
COMMENT: HF conditions expected to be disrupted by shortwave
fadeouts today due to active solar region. Two Earth directed
coronal mass ejections have impacted the Earth, however ionospheric
response has not been as bad as predicted. Todays T index revised
to 40. However, another coronal mass ejection is expected to
arrive late 18 early 19 Jan and depressed conditions are expected
for 19 Jan and possibly 20 Jan.
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
PO Box 1386 | WWW: http://www.ips.gov.au
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