[Ips-dhfpr] IPS Daily HF Prop Report - 25 October 00
Regional Warning Centre
rwc at ips.gov.au
Thu Oct 26 10:29:08 EST 2000
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 25/2330Z OCTOBER 2000 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (25 OCTOBER)
Date T index Conditions
25 Oct 131 Normal
Flares: none.
MUFs:
Equatorial PNG Region:
Enhanced by 20 to 30% overnight,
Mostly near predicted monthly values during the day,
Northern Australian Region:
Slightly enhanced overnight,
Mostly near predicted monthly values during the day,
Southern Australian and New Zealand Region:
Depressed by 10 to 20% during the day,
Mostly near predicted monthly values overnight,
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day.
Predicted Monthly T index for October: 135
2. FORECAST (26 OCTOBER - 28 OCTOBER)
Date T index Conditions MUFs
26 Oct 140 Normal near predicted monthly values
27 Oct 140 Normal Near predicted monthly values
28 Oct 120 Fair-normal 10 to 20% below predicted monthly
values
COMMENT: IPS HF Communications Warning 72 was issued on 25 October
and is current for interval 28-30 October. Mildly degraded HF
conditions observed during local day hours for southern region
Aus/NZ. Enhanced HF conditions observed at Darwin and Vanimo
during local night hours. Futher degradation are expected for
the 28 Oct following the anticipated arrival of CME associated
with C-class flare observed on the 25 Oct at 1125 UT.
IPS Radio and Space Services | email: asfc at ips.gov.au
PO Box 1386 | WWW: http://www.ips.gov.au/asfc
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au/users/asfc/
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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