[Ips-dhfpr] IPS Daily HF Prop Report - 13 March 12 issued 2353 UT on 13 Mar 2012

rwc rwc at ips.gov.au
Wed Mar 14 10:53:24 EST 2012


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 13/2330Z MARCH 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 MARCH) 
Date   T index  Conditions    
13 Mar    75    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M7.9    1743UT  probable   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Enhanced by 40% during local day.
      Enhanced by 35% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
     Proton event in progress, increased absorption 
       observed.

PCA Event : 10Mev Proton/PCA Event Began at 0530UT 07/03, Ended at 2135UT 12/03
 and, 10Mev Proton/PCA Event Began 13 03 2012 1900UT and is in progress

Predicted Monthly T index for March:  81


2. FORECAST (14 MARCH - 16 MARCH)
Date   T index  Conditions       MUFs                              
14 Mar    70    Normal           Near predicted monthly values.
15 Mar    70    Normal           Near predicted monthly values    
16 Mar    60    Fair-normal      Near predicted monthly values/depressed 
                                 10 to 20%   

COMMENT: Weak ionosphere for the Antarctic region with increased 
absorption. The present proton event is declining. HF propagation 
conditions are expected to improve slightly over the next 2 days. 
Degraded ionospheric conditions possible day 3 affecting higher 
latitudes due to anticipated geomagnetic disturbances.

----------------------------------------------------------
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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