[Ips-dhfpr] IPS Daily HF Prop Report - 24 May 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 24/2330Z MAY 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 MAY) 
Date   T index  Conditions    
24 May     4    Fair-normal    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Depressed by 30% during local day,
      Depressed by 20% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Insufficient data available.

PCA Event : No event.

Predicted Monthly T index for May:   9
2. FORECAST (25 MAY - 27 MAY)
Date   T index  Conditions       MUFs                              
25 May    15    Fair-normal      Slightly below predicted monthly 
                                 values across equatorial/pacific 
                                 and Australian regions. Very 
                                 Weak F-layer support in polar 
                                 regions. 
26 May    15    Normal           Near predicted monthly values. 
                                 Weak F-layer support in polar 
                                 regions.     
27 May    20    Normal           Near predicted monthly values. 
                                 Weak F-layer support in polar 
                                 regions.    
COMMENT: Usable frequencies were below predicted monthly values 
across all Australasian regions for the first half of the UT 
day. Isolated cases of short lived strong Sporadic E were also 
observed at a number of stations. Across southern polar regions 
the F-layer is very weak offering poor ionospheric support during 
night time hours and being largely screened by the E-layer during 
the short day-light hours. 
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For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

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