[Ips-dhfpr] IPS Daily HF Prop Report - 07 December 08

rwc rwc at ips.gov.au
Mon Dec 8 10:51:03 EST 2008


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 07/2330Z DECEMBER 2008 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 DECEMBER) 
Date   T index  Conditions    
07 Dec   -50    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Depressed by 30% during local night.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 35% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day,
      Depressed by 30% during local night.
   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 (08 DECEMBER - 10 DECEMBER)
Date   T index  Conditions       MUFs                              
08 Dec   -35    Normal           depressed 10 to 30%/near predicted 
                                 monthly values 
09 Dec   -35    Normal           depressed 10 to 30%/near predicted 
                                 monthly values     
10 Dec   -35    Normal           depressed 10 to 30%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 22 was issued on 7 December 
and is current for interval 8-10 December. Moderate to deep depressions 
observed Equatorial/Aus regions mainly local night. 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, continuing weak ionosphere 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
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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