[Ips-dhfpr] IPS Daily HF Prop Report - 25 July 04

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 25/2330Z JULY 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 JULY) 
Date   T index  Conditions    
25 Jul    92    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M7.1    0552UT  probable   lower  E. Asia/Aust.
  M1.0    0640UT  possible   lower  Mid East/Indian
  M2.2    1349UT  possible   lower  European
  M1.1    1531UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Equatorial PNG Region:
      Enhanced by 15% during local day,
      Enhanced by 135% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Enhanced by 30% during local day,
      Enhanced by 100% during local night.
   Southern Australian and New Zealand Region:
      Enhanced by 40% during local day,
      Enhanced by 25% during local night.
      Depressed by 35% after local dawn.
   Antarctic Region (Casey/Scott Base):
      Proton event in progress, increased absorption observed.


PCA Event : 10Mev Proton/PCA Event Began 25 07 2004 1920UT and is in progress

Predicted Monthly T index for July:  39
2. FORECAST (26 JULY - 28 JULY)
Date   T index  Conditions       MUFs                              
26 Jul   -10    Poor-Fair        depressed 20 to 25% (south Aus/NZ)
26 Jul    30    Fair-Normal      near predicted monthly values (north Aus).
27 Jul   -10    Fair             depressed 10 to 20%/near predicted 
                                 monthly values     
28 Jul    60    Fair             depressed 10 to 20%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 32 was issued on 26 July 
and is current for interval 26-28 July (SWFs) . Southern region 
MUFs strongly depressed after local dawn this morning, following 
overnight geomangetic storm activity. Minor degradation periods 
in HF conditions are expected for northern Australia regions 
over the next 24 hours. Depressed conditions for southern regions 
of AUS/NZ are expected over the next 2 days. 
----------------------------------------------------------
For an explanation of some of the terms in this report, goto
http://www.ips.gov.au, and follow links to Educational->
Gloassary on Solar Terrestrial Terms.

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