[Ips-dhfpr] IPS Daily HF Prop Report - 09 April 10

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 09/2330Z APRIL 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 APRIL) 
Date   T index  Conditions    
09 Apr    21    Normal         

Flares: none.

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

PCA Event : No event.

Predicted Monthly T index for April:  20
2. FORECAST (10 APRIL - 12 APRIL)
Date   T index  Conditions       MUFs                              
10 Apr    20    Normal           Near predicted monthly values 
11 Apr    20    Normal           Near predicted monthly values     
12 Apr    10    Normal           depressed 10 to 30%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 7 was issued on 9 April 
and is current for interval 12 April only. Isolated cases of 
sporadic E observed in the Australian region. Spread F observed 
at Hobart station during local night time hours. Expect MUFs 
to be normal predicticted monthly values in the Australian region 
over the next two days. On day three, 12 April, expect depressions 
between 10 and 30 percent at mid to high latitudes due to possible 
effects from CME impacting the near Earth environment on 11 April. 
----------------------------------------------------------
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.

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