[Ips-dhfpr] IPS Daily HF Prop Report - 16 March 09

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 16/2330Z MARCH 2009 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 MARCH) 
Date   T index  Conditions    
16 Mar    -4    Normal         

Flares: none.

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

PCA Event : No event.

Predicted Monthly T index for March:   3
2. FORECAST (17 MARCH - 19 MARCH)
Date   T index  Conditions       MUFs                              
17 Mar    -4    Normal           0 to 5% below predicted monthly 
                                 values 
18 Mar    -4    Normal           0 to 5% below predicted monthly 
                                 values     
19 Mar     0    Normal           Near predicted monthly values    
COMMENT: GOES spacecraft solar x-ray flux data shows a slight 
increase in background x-ray flux, resulting in a slight increase 
in the ionisation of the ionosphere. Expect near monthly predicted 
to 5% below HF frequencies for the next two days, unless solar 
x-ray activity declines to previous levels. The effect of a small 
coronal hole should begin in 3 days, 19th March UT, with slightly 
increased geomagnetic activity which will likely raise ionisation 
and frequencies to near monthly predicted levels for a day or 
two. 
----------------------------------------------------------
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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