[Ips-dhfpr] IPS Daily HF Prop Report - 22 September 11
rwc
rwc at ips.gov.au
Fri Sep 23 09:32:07 EST 2011
SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 22/2330Z SEPTEMBER 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST
1. SUMMARY (22 SEPTEMBER)
Date T index Conditions
22 Sep 82 Normal
Flares Max Fadeout Freq. Sectors
M1.1 1002UT possible lower European
X1.5 1102UT probable all European
MUFs:
Cocos Island Region:
Near predicted monthly values with enhancements to 45%
11-17 UT.
Niue Island Region:
Near predicted monthly values with enhancements to 45%
04-10 and 22-23 UT.
Northern Australian Region:
Near predicted monthly values with enhancements to 25%
11-16 UT at Darwin.
Southern Australian and New Zealand Region:
Near predicted monthly values to 20% enhanced. Some night
spread F observed at Canberra and Hobart. No Learmonth
data 03-23 UT.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values to 25% enhanced.
PCA Event : No event.
Predicted Monthly T index for September: 62
2. FORECAST (23 SEPTEMBER - 25 SEPTEMBER)
Date T index Conditions MUFs
23 Sep 75 Normal Near predicted monthly values
to 20% enhanced.
24 Sep 70 Fair Near predicted monthly values
to 20% enhanced.
25 Sep 55 Normal Near predicted monthly values.
Depressions to 20% possible.
COMMENT: IPS HF Communications Warning 42 was issued on 21 September
and is current for interval 22-23 September (SWFs) . With solar
activity increasing, there is the chance of sudden disruptions
to communications (short wave fade-outs).
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.
IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
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