[Ips-dhfpr] IPS Daily HF Prop Report - 27 December 02

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 27/2330Z DECEMBER 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 DECEMBER) 
Date   T index  Conditions    
27 Dec   134    Normal         

Flares: none.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Slightly below predicted monthly values over the UT day
      with periods of significant disturbance.


PCA Event : No event.

Predicted Monthly T index for December:  90
2. FORECAST (28 DECEMBER - 30 DECEMBER)
Date   T index  Conditions       MUFs                              
28 Dec   125    Fair             Enhanced 10-20% low to mid latitudes, 
                                 depressed 5-15% high latitudes. 
29 Dec   130    Fair             Enhanced 10-20% low to mid latitudes, 
                                 depressed 5-15% high latitudes.     
30 Dec   140    Normal-Fair      Near predicted monthly values    
COMMENT: IPS HF Communications Warning 81 was issued on 25 December 
and is current for interval 28-29 December. Persistent and occasionally 
intense sporadic E observed at all latitudes, but particularly 
in NZ/Antarctic regions. Coronal hole induced geomagnetic activity 
may cause mild ionospheric depressions 28 to 29 Dec. 

IPS Radio and Space Services      | email: asfc at ips.gov.au
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