[Ips-dhfpr] IPS Daily HF Prop Report - 18 December 08

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 18/2330Z DECEMBER 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 DECEMBER) 
Date   T index  Conditions    
18 Dec   -36    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Depressed by 25% during local day,
      Depressed by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 20% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 20% over the UT day.

PCA Event : No event.

Predicted Monthly T index for December:   4
2. FORECAST (19 DECEMBER - 21 DECEMBER)
Date   T index  Conditions       MUFs                              
19 Dec   -35    Normal-fair      near predicted monthly values/depressed 
                                 10 to 30% 
20 Dec   -35    Normal-fair      near predicted monthly values/depressed 
                                 10 to 30%     
21 Dec   -35    Normal-fair      near predicted monthly values/depressed 
                                 10 to 30%    
COMMENT: IPS HF Communications Warning 25 was issued on 17 December 
and is current for interval 17-19 December. Depressed conditions 
observed for Northern AUS/Equatorial regions during local day 
and night with similar conditions for Southern AUS/NZ regions. 
Depressed conditions for Antarctic regions over the entire UT 
day. Similar conditions are expected for the next few days with 
MUF depressions of 10%-30%. 
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For an explanation of some of the terms in this report, go to
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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