[Ips-dhfpr] IPS Daily HF Prop Report - 23 December 03

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 23/2330Z DECEMBER 2003 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 DECEMBER) 
Date   T index  Conditions    
23 Dec    85    Normal         

Flares: none.

MUFs:
   Equatorial PNG Region:
      Enhanced by 20-25% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% 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 (24 DECEMBER - 26 DECEMBER)
Date   T index  Conditions       MUFs                              
24 Dec   100    Normal           15 to 30% above predicted monthly 
                                 values 
25 Dec   100    Normal           15 to 30% above predicted monthly 
                                 values     
26 Dec   100    Normal           15 to 30% above predicted monthly 
                                 values    
COMMENT: Generally good HF conditions observed in most regions, 
despite continuing elevated solar wind velocities. Periods of 
sporadic-E were observed in S Aus/NZ region, and spread-F conditions 
observed in Antarctic region. The present coronal hole wind stream 
should continue to decline in velocity over the next two days, 
and mostly quiet geomagnetic conditions are anticipated. Expect 
generally good HF propagation conditions for the next three days, 
with periods of disturbance possible at high latitudes. 

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 
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