[Ips-dhfpr] IPS Daily HF Prop Report - 23 April 02

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 23/2330Z APRIL 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 APRIL) 
Date   T index  Conditions    
23 Apr   121    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Mostly near predicted monthly values,
      Enhanced by 30% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Depressed by 15% during local night.
      Enhanced by 15% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base):
      Proton event in progress, increased absorption observed.


Predicted Monthly T index for April: 113
2. FORECAST (24 APRIL - 26 APRIL)
Date   T index  Conditions       MUFs                              
24 Apr   140    Normal           Near predicted monthly values 
                                 to enchanced upto 10%. 
25 Apr   150    Normal           10 to 20% above predicted monthly 
                                 values     
26 Apr   155    Normal           10 to 20% above predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 18 was issued on 23 April 
and is current for interval 23-24 April. Due to the partial halo 
CME, observed on 21 April, the geomagnetic activity rose upto 
minor storm level on 23 April. The HF conditions are expected 
to remain normal in Australian region over the next 3 days as 
the geomagnetic activity is declinig. 

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