[Ips-dhfpr] IPS Daily HF Prop Report - 07 September 03

rwc rwc at ips.gov.au
Mon Sep 8 08:51:07 EST 2003


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 07/2330Z SEPTEMBER 2003 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    66    Normal         

Flares: none.

MUFs:
   Equatorial PNG Region:
      Enhanced by 20% during local day,
      Enhanced by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values.


PCA Event : No event.

Predicted Monthly T index for September:  57
2. FORECAST (08 SEPTEMBER - 10 SEPTEMBER)
Date   T index  Conditions       MUFs                              
08 Sep    70    Normal-fair      about 10% above predicted monthly 
                                 values 
09 Sep    50    Fair             depressed 10 to 15%/near predicted 
                                 monthly values     
10 Sep    40    Fair             depressed 10 to 15%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 62 was issued on 7 September 
and is current for interval 9-10 September. Initially good HF 
condtions expected today, then becoming degraded. Degradations 
expected to be confined to southern Aus/NZ region mostly during 
local night hours, with depressions likely after local dawn
on days 2 and 3 of the forecast period. Degradation forecast
increased due to anticipataion of combined effects of coronal 
hole wind stream and an arrival of a recent mass ejection during 
this interval.

IPS Radio and Space Services      | email: asfc at ips.gov.au
PO Box 1386                       | WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA     | FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010              | fax: +61 2 9213 8060 

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