[Ips-dhfpr] IPS Daily HF Prop Report - 22 April 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 22/2330Z APRIL 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 APRIL) 
Date   T index  Conditions    
22 Apr    10    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      No data available during local day,
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Predicted Monthly T index for April:   9
2. FORECAST (23 APRIL - 25 APRIL)
Date   T index  Conditions       MUFs                              
23 Apr     5    Normal           about 10% above predicted monthly 
                                 values 
24 Apr     9    Normal           near predicted monthly values     
25 Apr    12    Normal           near predicted monthly values    
COMMENT: The ionosphere in the Australian region was mostly normal 
over the UT day, with the exception of the N.Aus/PNG regions 
which experienced MUF depressions of up to 30% near local afternoon/
early evening. More widespread MUF depressions are possible in the 
Australian region today (23 April) in response to yesterday's 
elevated geomagnetic activity, however they are only expected 
to be mild. 

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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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