[Ips-dhfpr] IPS Daily HF Prop Report - 25 September 01
rwc at ips.gov.au
Wed Sep 26 10:01:16 EST 2001
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 25/2330Z SEPTEMBER 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (25 SEPTEMBER)
Date T index Conditions
25 Sep 150 Normal
Flares Max Fadeout Freq. Sectors
M7/1N 0440UT confirmed lower E. Asia/Aust.
M2/1N 1027UT possible lower European
M1/SF 0148UT confirmed lower E. Asia/Aust.
Equatorial PNG Region:
Enhanced by 20%.
Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced greater than 20% during local night.
Antarctic Region (Casey/Scott Base):
Significantly degraded due to PCA event.
Predicted Monthly T index for September: 108
2. FORECAST (26 SEPTEMBER - 28 SEPTEMBER)
Date T index Conditions MUFs
26 Sep 70 Poor 20 to 40% below predicted monthly
27 Sep 100 Fair-Poor depressed 10 to 20%/near predicted
28 Sep 115 Normal Near predicted monthly values
COMMENT: IPS HF Communications Warning 50 was issued on 25 September
and is current for interval 26-27 September. Significantly degraded
HF conditions have been observed at high lats since approximately
16UT on 24 September due to a PCA event and are expected to continue
to be degraded for the next couple of days. Mid-low latitudes
are expected to become significantly degraded for 26-27 September
as the result of significant geomagnetic activity. 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/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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