[Ips-dhfpr] IPS Daily HF Prop Report - 17 November 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 17/2330Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 NOVEMBER) 
Date   T index  Conditions    
17 Nov   -22    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
      Depressed by 40% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% over the UT day.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day. 

PCA Event : No event.

Predicted Monthly T index for November:  11
2. FORECAST (18 NOVEMBER - 20 NOVEMBER)
Date   T index  Conditions       MUFs                              
18 Nov   -15    Normal           near predicted monthly values/depressed 
                                 10 to 20% 
19 Nov   -15    Normal           near predicted monthly values/depressed 
                                 10 to 20%     
20 Nov   -10    Normal           near predicted monthly values/depressed 
                                 10 to 20%    

COMMENT: IPS HF Communications Warning 30 was issued on 15 November 
and is current for interval 16-18 November. Widespread depressions 
in MUFs continue across Australian/ NZ/SW-Pacific region due 
to lack of solar ionisation. Particularly severe depressions 
of up to 45% were again observed at some equatorial stations 
overnight. Expect regional ionosphere to remain generally depressed 
for at least next two days with continuing large fluctuations 
in MUFs at equatorial and N.Aus locations. 

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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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