[Ips-dhfpr] IPS Daily HF Prop Report - 15 March 13 issued 2330 UT on 15 Mar 2013

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 MARCH 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 MARCH) 
Date   T index  Conditions    
15 Mar   101    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    0709UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Enhanced by 35% during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Enhanced by 40% during local day.
      Enhanced by 55% during local night.
   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 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for March:  69


2. FORECAST (16 MARCH - 18 MARCH)
Date   T index  Conditions       MUFs                              
16 Mar    95    Normal           Near to 15% above predicted 
                                 monthly values
17 Mar    90    Poor             Near to 15% above predicted 
                                 monthly values    
18 Mar    40    Normal-fair      Depressed 15%/near predicted 
                                 monthly values   

COMMENT: IPS Preliminary HF Communications Warning 3 was issued 
on 15 March and is current for 17-19 Mar. HF propagation conditions 
are normal to good. Significant geomagnetic activity expected 
for the 17th of March is likely to reduce the MUFs for HF communication 
from midway through the 17th and into the 18th of March. Due 
to the significant enhancements currently being seen compared 
with the monthly prediction, the depressions compared with the 
predicted values may be only around 15%. More significant depressions 
are possible, particularly in southern and polar regions.

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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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