[Ips-dhfpr] IPS Daily HF Prop Report - 23 September 01

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 23/2330Z SEPTEMBER 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 SEPTEMBER) 
Date   T index  Conditions    
23 Sep   148    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
 M1/SN    1137UT  possible   lower  European

MUFs:
   Equatorial PNG Region:
      Enhanced greater than 15%.
   Northern Australian Region:
      Enhanced greater than 15%.
   Southern Australian and New Zealand Region:
      Enhanced by 15% during local day,
      Enhanced by 20% during local night.
      Depressed by 15% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Enhanced greater than 15% to depressed 15%.


Predicted Monthly T index for September: 108
2. FORECAST (24 SEPTEMBER - 26 SEPTEMBER)
Date   T index  Conditions       MUFs                              
24 Sep   120    Fair-normal      depressed 10 to 20%/near predicted 
                                 monthly values 
25 Sep   140    Normal           Near predicted monthly values 
                                 to enhanced 15%.     
26 Sep   130    Normal           near predicted monthly values/depressed 
                                 5 to 15%    
COMMENT: Degraded HF conditions have been observed since local 
dawn for Southern Australian and New Zealand regions following 
mildly elevated geomagnetic activity during local night. Conditions 
should return to near normal later in the local day. Fadeouts 
can be expected on daylight HF circuits. 

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