[Ips-dhfpr] IPS Daily HF Prop Report - 06 December 08

rwc rwc at ips.gov.au
Sun Dec 7 10:37:02 EST 2008


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 06/2330Z DECEMBER 2008 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   -31    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Mostly near predicted monthly values,
   Northern Australian Region:
      Near predicted monthly values 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.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Predicted Monthly T index for December:   4
2. FORECAST (07 DECEMBER - 09 DECEMBER)
Date   T index  Conditions       MUFs                              
07 Dec   -30    Normal           depressed 10 to 30%/near predicted 
                                 monthly values 
08 Dec   -30    Normal           depressed 10 to 30%/near predicted 
                                 monthly values     
09 Dec   -30    Normal           depressed 10 to 30%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 21 was issued on 6 December 
and is current for interval 7 December only. Variable depressions 
observed Equatorial region. Mild to moderate depressions most 
Aus/NZ regions, mainly local dawn. Sustained periods of sporadic-E 
conditions at most Aus latitudes, extending at times to Equatorial 
region. Mild depressions and spread-F conditions Antarctic region 
in association with elevated geomagnetic activity. Expect similar 
regional HF/ionospheric conditions day one, possibly deteriorating 
again Equatorial/N Aus regions days two to three. 
----------------------------------------------------------
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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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
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