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

[rwc]

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

1. SUMMARY (22 NOVEMBER) 
Date   T index  Conditions    
22 Nov   -50    Poor-fair      

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Depressed by 25% during local day,
      Depressed by 45% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 40% during local day,
      Depressed by 35% during local night.
      Depressed by 30% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 30% during local day,
      Depressed by 30% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20 to 30% over the UT day with periods of
      degradations.

PCA Event : No event.

Predicted Monthly T index for November:  11
2. FORECAST (23 NOVEMBER - 25 NOVEMBER)
Date   T index  Conditions       MUFs                              
23 Nov   -50    Fair             20 to 40% below predicted monthly 
                                 values 
24 Nov   -45    Normal-fair      15 to 30% below predicted monthly 
                                 values     
25 Nov   -40    Normal           10 to 20% below predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 33 was issued on 
22 November and is current for interval 23 November only. 
Widespread depressions in MUFs continued across the 
Australian/ NZ/SW-Pacific region due to lack of solar 
ionisation. Minor to significant degradations in HF 
conditions and depressions in MUFs may be expected 
across Aus/NZ regions for the next two days. Some 
improvements in conditions may be possible on 25 November 
as the currently going on coronal hole effect is expected 
to be over by then. 
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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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