[Ips-dhfpr] IPS Daily HF Prop Report - 26 September 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 26/2330Z SEPTEMBER 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 SEPTEMBER) 
Date   T index  Conditions    
26 Sep    88    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M2/--    1446UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day,
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values during local day,
      Enhanced by 40% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 40% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Enhanced by 20% during local night.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% 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 (27 SEPTEMBER - 29 SEPTEMBER)
Date   T index  Conditions       MUFs                              
27 Sep    70    Normal           Near predicted monthly values. 
                                 Possible occasional depressions 
                                 to 20%.. 
28 Sep    80    Normal           Near predicted monthly values 
                                 to 20% enhanced.     
29 Sep    80    Normal           Near predicted monthly values    
COMMENT: Variable enhancements /depressions observed mainly at 
low latitudes. Disturbed conditions at high latitudes due to 
significant geomagnetic activity. With solar activity increasing, 
there is the chance of sudden disruptions to communications (short 
wave fade-outs)at low to mid latitudes during local day. Expect 
continuing disturbed ionospheric conditions at high latitudes 
days one and two. There were some gaps in IPS ionospheric data 
today due to system problems. 
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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
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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