[Ips-dhfpr] IPS Daily HF Prop Report - 25 January 04

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 25/2330Z JANUARY 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 JANUARY) 
Date   T index  Conditions    
25 Jan    11    Fair           

Flares: none.

MUFs:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Depressed by 35% during local day,
      Depressed by 20% during local night
      and after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values during local night.
      Depressed by 30% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


PCA Event : No event.

Predicted Monthly T index for January:  56
2. FORECAST (26 JANUARY - 28 JANUARY)
Date   T index  Conditions       MUFs                              
26 Jan    10    Fair             Depressed 10-30% S Aus/NZ regions, 
                                 otherwise near predicted monthly 
                                 values. 
27 Jan    20    Fair             Depressed 10-20% S Aus/NZ regions, 
                                 otherwise near predicted monthly 
                                 values.     
28 Jan    30    Normal-fair      Depressed 5-15% S Aus/NZ/Antarctic 
                                 regions, otherwise near predicted 
                                 monthly values.    
COMMENT: IPS HF Communications Warning 10 was issued on 25 January 
and is current for interval 26-27 January. Depressions observed 
yesterday after local dawn persisted throughout the UT day. Widespread 
depressions observed again today at mid to high latitudes, in 
response to slightly elevated geomagnetic activity of unknown 
origin. Expect continuing mid-latitude depressions today and 
tomorrow. Possible further disturbance at high latitudes on day 
3 due to a mild coronal hole wind stream effect. 

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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