[Ips-dhfpr] IPS Daily HF Prop Report - 24 September 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 24/2330Z SEPTEMBER 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 SEPTEMBER) 
Date   T index  Conditions    
24 Sep    88    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.6 23/2219UT  possible   lower  West Pacific
  M1.9 23/2357UT  possible   lower  West Pacific
  X1.9    0940UT  probable   all    Mid East/Indian
  M7.1    1322UT  probable   lower  European
  M1.7    1701UT  possible   lower  South American/
                                    Atlantic
  M3.1    1726UT  possible   lower  South American/
                                    Atlantic
  M3.0    1926UT  possible   lower  East Pacific/
                                    North American
  M5.8    2036UT  possible   lower  East Pacific/
                                    North American
  M1.2    2129UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Enhanced by 15% during local day,
      Enhanced by 40% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
      Enhanced by 30% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 25% over the UT day.
      Proton event in progress, increased absorption observed.

PCA Event : 10Mev Proton/PCA Event Began 23 09 2011 2250UT and is in progress

Predicted Monthly T index for September:  62
2. FORECAST (25 SEPTEMBER - 27 SEPTEMBER)
Date   T index  Conditions       MUFs                              
25 Sep    75    Normal           Near predicted monthly values 
                                 to 20% enhanced. 
26 Sep    70    Fair             Near predicted monthly values 
                                 to 20% enhanced.     
27 Sep    60    Normal-Fair      Near predicted monthly values 
                                 to 20% depressed.    
COMMENT: IPS HF Communications Warning 43 was issued on 23 September 
and is current for interval 24-26 September (SWFs) . 

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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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