[Ips-dhfpr] IPS Daily HF Prop Report - 08 October 05

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z OCTOBER 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 OCTOBER) 
Date   T index  Conditions    
08 Oct    20    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG Region:
      Variable depressions up to 30% over the UT day.
   Northern Australian Region:
      Depressed by 15% during local day,
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for October:  23
2. FORECAST (09 OCTOBER - 11 OCTOBER)
Date   T index  Conditions       MUFs                              
09 Oct    24    Normal-Fair      Variably depressed to 20% Equatorial/N.Aus 
                                 region, Near predicted monthly 
                                 values elsewhere 
10 Oct    25    Normal           near predicted monthly values     
11 Oct    28    Normal           about 10% above predicted monthly 
                                 values    
COMMENT: The ionosphere in the Australian region was depressed 
15-20% for up to 6 hours during the local daytime following the 
onset of geomagnetic activity at ~0200Z. Similar depressions 
occurred throughout the local nighttime. Variable depressions 
were again observed in the Equatorial/N Aus regions. Expect mildly 
depressed HF conditions over the next 24 hours, particularly 
in the NZ/S.Aus/Antarctic regions in response to continuing elevated 
geomagnetic activity levels, however the current indication is 
that the effect will only be minor for the Australian ionosphere. 
Variable depressions expected to continue in the Equatorial/N.Aus 
region. Isolated disturbances possible in the Antarctic region 
associated with periods of enhanced geomagnetic activity. 
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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.

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