[Ips-dhfpr] IPS Daily HF Prop Report - 17 February 03
rwc at ips.gov.au
Tue Feb 18 10:37:29 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 17/2330Z FEBRUARY 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (17 FEBRUARY)
Date T index Conditions
17 Feb 108 Fair-normal
Equatorial PNG Region:
Near predicted monthly values during local day,
Enhanced by 25% during local night.
Northern Australian Region:
Enhanced by 20% during local day,
Enhanced by 15% during local night.
Southern Australian and New Zealand Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base):
Slightly below predicted monthly values with isolated
periods of disturbance.
PCA Event : No event.
Predicted Monthly T index for February: 88
2. FORECAST (18 FEBRUARY - 20 FEBRUARY)
Date T index Conditions MUFs
18 Feb 100 Fair-normal Enhanced 10-20% Equatorial/N.
Aus region. Depressed 15-25%
during local daylight hours
S. Aus/NZ region. Depressed
5-10% at times Antarctic region.
19 Feb 100 Fair-normal Enhanced 10-20% Equatorial/N.
Aus region. Near predicted monthly
values S. Aus/NZ/Antarctic region.
20 Feb 120 Normal Near predicted monthly values
COMMENT: IPS HF Communications Warning 11 was issued on 17 February
and is current for interval 17-18 February. Depressions of 20-30%
observed yesterday and expected today at mid-latitudes in E.Aus/NZ
region. Extended periods of spread-F conditions and local disturbance
at high latitudes in association with coronal-hole induced geomagnetic
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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