[Ips-dhfpr] IPS Daily HF Prop Report - 21 November 03
rwc
rwc at ips.gov.au
Sat Nov 22 11:21:18 EST 2003
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 21/2330Z NOVEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (21 NOVEMBER)
Date T index Conditions
21 Nov -45 Poor
Flares Max Fadeout Freq. Sectors
M5.8/2B 20/2354UT possible lower West Pacific
MUFs:
Equatorial PNG Region:
Depressed by 15-30% during local day,
Depressed by 40% during local night.
Northern Australian Region:
Depressed by 45% during local day,
Depressed by 25% during local night,
Mostly near predicted monthly values
since local dawn.
Southern Australian and New Zealand Region:
Depressed by 40% during local day,
Depressed by 30% during local night,
Mostly near predicted monthly values
since local dawn.
Antarctic Region (Casey/Scott Base):
Depressed by 15-30% over the UT day,
Mostly near predicted monthly values
since local dawn.
PCA Event : No event.
Predicted Monthly T index for November: 52
2. FORECAST (22 NOVEMBER - 24 NOVEMBER)
Date T index Conditions MUFs
22 Nov 60 Fair-normal near predicted monthly values/depressed
10 to 20%
23 Nov 60 Normal-fair depressed 10 to 20%/near predicted
monthly values
24 Nov 70 Normal Near predicted monthly values to enhanced
COMMENT: IPS HF Communications Warning 90 was issued on 22 November
and is current for interval 22-24 November (SWFs) . Severe ionospheric
depressions were observed for most of the UT day of 22 November.
HF conditions appear to be returning to mostly normal, with only
mild depressions expected at times over the next few days. SWF's
are also possible over the next few days.
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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