[Ips-dhfpr] IPS Daily HF Prop Report - 21 December 06

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 21/2330Z DECEMBER 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 DECEMBER) 
Date   T index  Conditions    
21 Dec   -14    Poor-fair      

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Extended periods of disturbance over the UT day.

PCA Event : No event.

Predicted Monthly T index for December:  10
2. FORECAST (22 DECEMBER - 24 DECEMBER)
Date   T index  Conditions       MUFs                              
22 Dec   -12    Normal-fair      10 to 30% below predicted monthly 
                                 values 
23 Dec   -10    Normal           10 to 20% below predicted monthly 
                                 values     
24 Dec   -10    Normal           10 to 20% below predicted monthly 
                                 values    
COMMENT: Generally depressed ionospheric conditions observed 
at all latitudes mainly local night. Periods of intense sporadic-E 
observed N and S Aus regions during local day/evening. Evening 
spread-F conditions observed S Aus/NZ regions. Generally weak 
ionospehere observed over the UT day in mid Aus regions. Expect 
ionospheric support to be slightly depressed over the next few 
days due to low solar flux and elevated geomagnetic activity. 
----------------------------------------------------------
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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