[Ips-dhfpr] IPS Daily HF Prop Report - 27 October 03
rwc
rwc at ips.gov.au
Tue Oct 28 10:12:20 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 27/2330Z OCTOBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (27 OCTOBER)
Date T index Conditions
27 Oct 70 Fair-normal
Flares Max Fadeout Freq. Sectors
M7.6/2N 26/2140UT probable lower East Pacific/
North American
M2.7/2F 0833UT possible lower Mid East/Indian
M5.0/SF 0927UT possible lower Mid East/Indian
M6.7/SF 1243UT probable lower European
MUFs:
Equatorial PNG Region:
Enhanced by 30% during local day,
Enhanced by 25% during local night.
Northern Australian Region:
Enhanced by 15% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base):
Absorption until 15UT then, near predicted monthly
values over the UT day. Some spread F.
PCA Event : Began at 1825UT 26/10, Ended at 1950UT 27/10
Predicted Monthly T index for October: 55
2. FORECAST (28 OCTOBER - 30 OCTOBER)
Date T index Conditions MUFs
28 Oct 55 Normal-Poor near predicted monthly values/depressed
10 to 20%
29 Oct 20 Poor-Fair depressed 15 to 30%/near predicted
monthly values
30 Oct 35 Fair-Normal depressed 10 to 15%/near predicted
monthly values
COMMENT: IPS HF Communications Warning 77 was issued on 26 October
and is current for interval 28-29 October. MUFs are expected
to be near predicted monthly values for most of the local day.
Depressed conditions expected from late UT 28 Oct and 29 Oct
due to anticipated geomagnetic activity from recent mass ejections.
Frequent flares and fadeouts can be expected on daylight HF circuits.
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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