[Ips-dhfpr] IPS Daily HF Prop Report - 31 December 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 31/2330Z DECEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 DECEMBER) 
Date   T index  Conditions    
31 Dec   -17    Normal-poor    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values to depressed
      15-30% at times.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Mostly near predicted monthly values.

PCA Event : No event.

Predicted Monthly T index for December:   5
2. FORECAST (01 JANUARY - 03 JANUARY)
Date   T index  Conditions       MUFs                              
01 Jan   -10    Normal-fair      depressed 10 to 20%/near predicted 
                                 monthly values 
02 Jan    -5    Normal-fair      depressed 5 to 15%/near predicted 
                                 monthly values     
03 Jan     0    Normal-fair      depressed 5 to 10%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 48 was issued on 31 December 
and is current for interval 31 December to 2 January (SWFs) . 
MUF depressions of up to 30% were observed at times across the 
Australian region over the past 24 hours. Mild depressions are 
expected at times over the Aus/NZ region for the next few days, 
however, depressions should become less significant as solar 
activity is expected to be mildly elevated over the next few 
days. Blanketing Sporadic-E was again observed at times across 
the Australian region during the past 24 hours which may have 
effected HF propagation conditions. Continuing sporadic-E is 
expected at times for the next few days. 
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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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