[Ips-dhfpr] IPS Daily HF Prop Report - 17 May 12 issued 2345 UT on 17 May 2012

rwc rwc at ips.gov.au
Fri May 18 09:45:09 EST 2012


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 MAY 2012 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    88    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M5.1    0147UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   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:  79


2. FORECAST (18 MAY - 20 MAY)
Date   T index  Conditions       MUFs                              
18 May    70    Normal-fair      About 15% below predicted monthly 
                                 values
19 May    70    Normal-fair      About 15% below predicted monthly 
                                 values    
20 May    75    Normal           Near predicted monthly values   

COMMENT: HF conditions in the Australian region were mostly Normal 
over the UT day. Some periods of spread-F were observed at S.Aus 
locations overnight, degrading HF conditions there. Possible 
disturbed periods next three days, S Aus / NZ / Antarctic regions 
most likely to be affected.

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