[Ips-dhfpr] IPS Daily HF Prop Report - 11 April 02

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 11/2330Z APRIL 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 APRIL) 
Date   T index  Conditions    
11 Apr   153    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
      Enhanced by 15% after local dawn.
   Southern Australian and New Zealand Region:
      Enhanced by 15-35%.
   Antarctic Region (Casey/Scott Base):
      Enhanced by up to 50% over the UT day.


Predicted Monthly T index for April: 113
2. FORECAST (12 APRIL - 14 APRIL)
Date   T index  Conditions       MUFs                              
12 Apr   160    Normal-Fair      enhanced 15-25%/chance depressed 
                                 10-15% later in day. 
13 Apr   120    Normal-Fair      mild depressed 10-15%/enhanced 
                                 10-15%     
14 Apr   130    Normal           Near predicted monthly values    
COMMENT: IPS HF Communications Warning 12 was issued on 11 April 
and is current for interval 13-14 April. Forecast ionospheric 
response to forecast geomagnetic activity softened. Good HF conditions 
initially expected today. Degraded conditions expected during 
from second half of 12 Apr. Effects expected to be mild and confined 
to southern Aus/NZ region due to currently strong MUFs, and weak 
CME signature. Forecast adjusted as MUFs are currently running 
very strong in Aus/NZ region. 

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