[Ips-dhfpr] IPS Daily HF Prop Report - 27 April 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 27/2330Z APRIL 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 APRIL) 
Date   T index  Conditions    
27 Apr    30    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 50% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Predicted Monthly T index for April:   9
2. FORECAST (28 APRIL - 30 APRIL)
Date   T index  Conditions       MUFs                              
28 Apr    25    Normal-fair      near predicted monthly values/depressed 
                                 10 to 30% 
29 Apr    15    Normal-fair      near predicted monthly values/depressed 
                                 10 to 30%     
30 Apr    -5    Normal-fair      near predicted monthly values/depressed 
                                 10 to 30%    

COMMENT: Expect daytime enhancements in the Equatorial and Northern 
Australian region due to increase EUV and xrays. T was unexpectively 
high most likely due to increased ionization of the ionosphere. 
There however, will still be depressed conditions most likely 
limited to the Southern and Antarctic regions due to geomagnetic 
activity, particularly during local night and dawn. 
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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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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