[Ips-dhfpr] IPS Daily HF Prop Report - 21 December 03

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 21/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 DECEMBER) 
Date   T index  Conditions    
21 Dec    20    Fair-normal    

Flares: none.

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


PCA Event : No event.

Predicted Monthly T index for December:  50
2. FORECAST (22 DECEMBER - 24 DECEMBER)
Date   T index  Conditions       MUFs                              
22 Dec    50    Normal-fair      depressed 5 to 10%/near predicted 
                                 monthly values 
23 Dec    60    Normal-fair      Near predicted monthly values     
24 Dec    75    Normal           Near predicted monthly values    
COMMENT: Overnight depressions observed most regions, recovering 
after local dawn today. Night time equatorial spread-F observed. 
Periods of intense sporadic-E observed S Aus/NZ region. Expect 
further periods of disturbance today due to continuing coronal 
hole wind stream effects. HF conditions should gradually improve 
after day two. 

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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