[Ips-dhfpr] IPS Daily HF Prop Report - 07 September 02

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 07/2330Z SEPTEMBER 2002 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 SEPTEMBER) 
Date   T index  Conditions    
07 Sep   136    Normal-poor    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Enhanced by 30% during local day,
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 50% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 25% during local day,
      Enhanced by 45% during local night.
      Depressed 15% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Proton event in progress, increased absorption observed.
      Spread F observed.


PCA Event : 10Mev Proton/PCA Event Began 07 09 2002 0710UT and is in progress

Predicted Monthly T index for September:  96
2. FORECAST (08 SEPTEMBER - 10 SEPTEMBER)
Date   T index  Conditions       MUFs                              
08 Sep    90    Fair-Poor        depressed 10 to 15%/near predicted 
                                 monthly values 
09 Sep   120    Normal           Near predicted monthly values     
10 Sep   130    Normal-Fair      Near predicted monthly values    
COMMENT: IPS HF Communications Warning 43 was issued on 6 September 
and is current for interval 7-8 September. Degraded conditions 
expected for southern Aus/NZ region today, following geomagnetic 
storm onset overnight.. So far after local dawn MUF this morning 
regional depressions have been relatively mild (15%) and confined 
to southern regionAus/NZ . However, if the current level of geomagnetic 
activity persists, depressions may spread to lower latitudes. 

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