[Ips-dhfpr] IPS Daily HF Prop Report - 15 December 03

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 15/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 DECEMBER) 
Date   T index  Conditions    
15 Dec    31    Fair-normal    

Flares: none.

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


PCA Event : No event.

Predicted Monthly T index for December:  50
2. FORECAST (16 DECEMBER - 18 DECEMBER)
Date   T index  Conditions       MUFs                              
16 Dec    45    Fair-Normal     depressed 10 to 15%/near predicted 
                                 monthly values 
17 Dec    55    Normal           Near predicted monthly values     
18 Dec    55    Normal           Near predicted monthly values    
COMMENT: IPS HF Communications Warning 97 was issued on 15 December 
and is current for interval 19-20 December. Mild depressions 
again possible after local dawn for southern Aus/NZ region. MUFs 
are expected to generally return to near predicted monthly values 
over coming days, as the Earth leaves the coronal hole high speed 
wind stream. Another mild to moderately disturbed interval from 
a coronal hole wind stream is expected late 18 to 20 Dec. 

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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