[Ips-dhfpr] IPS Daily HF Prop Report - 11 April 13 issued 2344 UT on 11 Apr 2013

rwc rwc at ips.gov.au
Fri Apr 12 09:44:12 EST 2013


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 APRIL 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 APRIL) 
Date   T index  Conditions    
11 Apr    98    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M6.5    0716UT  probable   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      No data available during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Predicted Monthly T index for April:  68


2. FORECAST (12 APRIL - 14 APRIL)
Date   T index  Conditions       MUFs                              
12 Apr   100    Normal           Near to 15% above predicted 
                                 monthly values
13 Apr    80    Fair-poor        Near predicted monthly values/depressed 
                                 5 to 20%    
14 Apr    70    Poor-fair        Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: HF conditions were mostly normal today with minor to 
moderate MUF enhancements. Nearly similar conditions may be 
expected for 12 April and most parts of 13 April. Minor to 
significant MUF depressions and degradations in HF conditions 
are expected from late on 13 April and throughout the day on 
14 April, especially in mid and Southern Aus/NZ regions, due 
to expected enhancements in geomagnetic activity levels during 
this period. Chance of sudden ionospheric disturbances (SWFs) 
on circuits with daylight sectors.

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