[Ips-dhfpr] IPS Daily HF Prop Report - 17 May 13 issued 2330 UT on 17 May 2013

Regional Warning Centre rwc at ips.gov.au
Sat May 18 09:30:21 EST 2013


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 MAY 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 MAY) 
Date   T index  Conditions    
17 May    90    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M3/--    0857UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Predicted Monthly T index for May:  69


2. FORECAST (18 MAY - 20 MAY)
Date   T index  Conditions       MUFs                              
18 May    95    Normal           Near to 15% above predicted 
                                 monthly values
19 May    70    Fair-poor        Near predicted monthly values    
20 May    50    Normal           Near predicted monthly values   

COMMENT: Mostly normal ionospheric support observed over the 
AUS/NZ region for the last 24 hours. A PCA event is in progress 
affecting HF communications at high latitudes. MUFs expected 
to be mostly near predicted monthly values during the day 18-May, 
with a chance of depressed periods for Southern AUS/NZ regions 
overnight 18-May and into 19-May. Short wave fadeouts possible 
with a chance of isolated M and X flares from solar active regions.

----------------------------------------------------------
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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tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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