[Ips-dhfpr] IPS Daily HF Prop Report - 07 February 11

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 07/2330Z FEBRUARY 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 FEBRUARY) 
Date   T index  Conditions    
07 Feb    10    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day,
      Depressed by 20% during local night.
   Niue Island Region:
      Enhanced by 25% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day,
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Predicted Monthly T index for February:  38
2. FORECAST (08 FEBRUARY - 10 FEBRUARY)
Date   T index  Conditions       MUFs                              
08 Feb    10    Normal           10 to 20% below predicted monthly 
                                 values 
09 Feb    10    Normal           10 to 20% below predicted monthly 
                                 values     
10 Feb    20    Normal           near predicted monthly values/depressed 
                                 5 to 10%    
COMMENT: The regional ionosphere was mostly consistently depressed 
below averages at mid latitudes. Near equatorial stations were 
highly variable with large enhancements and depressions, probably 
the after effect of the weekend geomagnetic disturbance. The 
ionosphere should recover from the geomagnetic activity induced 
depression over the next 2 days. Recovery is slow due to lower 
than usual EUV ionising radiation from modest solar active regions. 
Sporadic-E occurred across the region and this is likely to continue. 
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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

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