[Ips-dhfpr] IPS Daily HF Prop Report - 20 May 13 issued 2355 UT on 20 May 2013

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SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 MAY 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 MAY) 
Date   T index  Conditions    
20 May    87    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.7    0526UT  possible   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for May:  69


2. FORECAST (21 MAY - 23 MAY)
Date   T index  Conditions       MUFs                              
21 May    80    Normal           Near predicted monthly values
22 May    75    Normal           Near predicted monthly values    
23 May    75    Normal           Near predicted monthly values   

COMMENT: IPS Preliminary HF Communications Warning 11 was issued 
on 18 May and is current for 20-21 May. Mostly normal conditions 
were observed during 20 May. Anticipated degraded conditions for
20 May did not eventuate due to the reduced impact of the CME.
Mostly normal conditions are expected for the next few days with the chance of
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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