[Ips-dhfpr] IPS Daily HF Prop Report - 23 September 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 23/2330Z SEPTEMBER 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 SEPTEMBER) 
Date   T index  Conditions    
23 Sep    86    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.6    0200UT  possible   lower  E. Asia/Aust.
  M1.6    2219UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Near predicted monthly values with enhancements to
      30%, 00, 08-18 UT, and depressions to 24% 20-23 UT.
   Niue Island Region:
      Near predicted monthly values with enhancements to
      30%, 02-06 and 18-23 UT, and enhancements to 55%,
      07-10 UT.
   Northern Australian Region:
      Near predicted monthly values with enhancements to
      25%, 12-15 UT.
   Southern Australian and New Zealand Region:
      Near predicted monthly values with enhancements to 25%
      from about 10 UT onward.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values to 30% enhanced.
      Depressions to 35% at Mawson 00-02 UT.

PCA Event : Began at 2105UT 23/09, Ended at 2135UT 23/09
 

Predicted Monthly T index for September:  62
2. FORECAST (24 SEPTEMBER - 26 SEPTEMBER)
Date   T index  Conditions       MUFs                              
24 Sep    75    Fair             Near predicted monthly values 
                                 to 20% enhanced. 
25 Sep    60    Normal           Near predicted monthly values. 
                                 Depressions to 20% possible.     
26 Sep    80    Normal           Near predicted monthly values 
                                 to 20% enhanced.    

COMMENT: IPS HF Communications Warning 43 was issued on 23 September 
and is current for interval 24-26 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
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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