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

rwc rwc at ips.gov.au
Thu Dec 7 10:53:43 EST 2006


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 06/2330Z DECEMBER 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 DECEMBER) 
Date   T index  Conditions    
06 Dec    18    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    0228UT  possible   lower  E. Asia/Aust.
  M6.0    0825UT  probable   lower  Mid East/Indian
  X6.6    1847UT  probable   all    East Pacific/
                                    North American

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Proton event in progress, increased absorption observed.

PCA Event : 10Mev Proton/PCA Event Began 06 12 2006 1625UT and is in progress

Predicted Monthly T index for December:  10
2. FORECAST (07 DECEMBER - 09 DECEMBER)
Date   T index  Conditions       MUFs                              
07 Dec    10    Normal-fair      near predicted monthly values/depressed 
                                 10 to 20% 
08 Dec     0    Normal-fair      near predicted monthly values/depressed 
                                 10 to 30%     
09 Dec     0    Normal           near predicted monthly values/depressed 
                                 10 to 20%    
COMMENT: IPS HF Communications Warning 34 was issued on 6 December 
and is current for interval 6-8 December. Moslty normal HF conditions 
for Northern Aus and Equatorial regions as well as Southern Aus/NZ 
regions. Poor ionospheric support for Antarctic conditions most 
likely due to PCA effects from the proton event that is in progress. 
Similar yet degraded conditions are expected for Southern Aus/NZ 
regions and Antarctic regions for the next 2 days with an anticipated 
increase in 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
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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