[Ips-dhfpr] IPS Daily HF Prop Report - 10 December 03

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 10/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 DECEMBER) 
Date   T index  Conditions    
10 Dec    42    Normal-poor    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
      Depressed by 40% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 45% after local dawn.
   Southern Australian and New Zealand Region:
      Mostly near predicted monthly values,
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Depressed by 10-20% over the UT day.


PCA Event : No event.

Predicted Monthly T index for December:  50
2. FORECAST (11 DECEMBER - 13 DECEMBER)
Date   T index  Conditions       MUFs                              
11 Dec    20    Fair             20 to 40% below predicted monthly 
                                 values 
12 Dec    35    Fair             depressed 10 to 20%/near predicted 
                                 monthly values     
13 Dec    40    Fair             depressed 10 to 20%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 95 was issued on 8 December 
and is current for interval 9-11 December. Widespread depressions 
observed after local dawn today. Occasionally strong sporadic-E 
conditions observed at all latitudes over the past 24 hours. 
Spread-F conditions at Antarctic stations. Expect continuing 
periods of disturbance for the next three days due to persisting 
coronal hole wind stream effects. 

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 
tel: +61 2 9213 8010              | fax: +61 2 9213 8060 

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