[Ips-dhfpr] IPS Daily HF Prop Report - 19 September 04

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 19/2330Z SEPTEMBER 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 SEPTEMBER) 
Date   T index  Conditions    
19 Sep    54    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.9    1712UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Equatorial PNG Region:
      Enhanced by 25% during local day,
      Enhanced by 65% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day,
      Enhanced by 40% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 30% during local night.
   Antarctic Region (Casey/Scott Base):
      Proton event in progress, increased absorption observed.


PCA Event : 10Mev Proton/PCA Event Began 19 09 2004 1950UT and is in progress

Predicted Monthly T index for September:  38
2. FORECAST (20 SEPTEMBER - 22 SEPTEMBER)
Date   T index  Conditions       MUFs                              
20 Sep    50    Normal           5 to 10% above predicted monthly 
                                 values 
21 Sep    50    Normal           5 to 10% above predicted monthly 
                                 values     
22 Sep    40    Normal-fair      near predicted monthly values/depressed 
                                 10 to 20%    
COMMENT: Conditions should be mostly normal for 20-21 September 
for mid-low latitudes, with poor HF conditions for high latitudes 
for 20 September due to a PCA event currently in progress. Fair-poor 
conditions are expected during 22 September for mid-high latitudes 
due to anticipated elevated geomagnetic activity. 
----------------------------------------------------------
For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

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