[Ips-dhfpr] IPS Daily HF Prop Report - 08 April 01

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z APRIL 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 APRIL) 
Date   T index  Conditions    
08 Apr   152    Normal         

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


Predicted Monthly T index for April: 120
2. FORECAST (09 APRIL - 11 APRIL)
Date   T index  Conditions       MUFs                              
09 Apr   100    Fair             10 to 20% below predicted monthly 
                                 values 
10 Apr   140    Normal           Near predicted monthly values     
11 Apr   150    Normal           Near predicted monthly values    
COMMENT: IPS HF Communications Warning 20 was issued on 6 April 
and is current for interval 8-10 April. Shortwave fadeouts expected 
on daylight HF circuits. Polar region HF comms still affected 
by PCA with proton fluxes still enhanced. Depression in progress 
at mid latitudes following the arrival of a shock associated 
with the M5 flare/full halo CME observed on 5 Apr. Further depressed 
conditions may be expected on 9 Apr after the anticipated arrival 
of a shock associated with the X5 flare and CME observed on 6 
Apr. 

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