[Ips-dhfpr] IPS Daily HF Prop Report - 17 March 12 issued 2352 UT on 17 Mar 2012

rwc rwc at ips.gov.au
Sun Mar 18 10:52:46 EST 2012


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 17/2330Z MARCH 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 MARCH) 
Date   T index  Conditions    
17 Mar    48    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M1.4    2039UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.      
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 25% during local day.
      Depressed by 35% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Poor ionospheric support over the UT day.

PCA Event : No event.

Predicted Monthly T index for March:  81


2. FORECAST (18 MARCH - 20 MARCH)
Date   T index  Conditions       MUFs                              
18 Mar    50    Fair             About 30% below predicted monthly 
                                 values
19 Mar    50    Fair             About 20% below predicted monthly 
                                 values    
20 Mar    60    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 20%   

COMMENT: IPS HF Communications Warning 17 was issued on 17 March 
and is current for 18 Mar only. Ongoing disturbances S Aus/NZ/Antarctic 
regions. Variable depressions observed Equatorial/N Aus regions. 
Spread F was observed at times in S Aus / NZ region. Expect degraded 
ionospheric conditions next three days due to further anticipated 
geomagnetic disturbances. S Aus / NZ / Antarctic regions most 
likely to be affected.

----------------------------------------------------------
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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