[Ips-dhfpr] IPS Daily HF Prop Report - 10 March 12 issued 2350 UT on 10 Mar 2012

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 10/2330Z MARCH 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 MARCH) 
Date   T index  Conditions    
10 Mar    58    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M5.4    1728UT  possible   lower  South American/
                                    Atlantic
  M8.4    1746UT  probable   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Depressed 30% 03-05UT.
      Depressed by 20% during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
   Southern Australian and New Zealand Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Proton event in progress, increased absorption 
      to -3 dB observed.

PCA Event : 10Mev Proton/PCA Event Began 07 03 2012 0530UT and is in progress

Predicted Monthly T index for March:  81


2. FORECAST (11 MARCH - 13 MARCH)
Date   T index  Conditions       MUFs                              
11 Mar    60    Fair             Near predicted monthly values. 
                                 Depressions to 20% possible 
                                 at times. 
12 Mar    50    Fair             Near predicted monthly values. 
                                 Depressions to 20% possible 
                                 at times.     
13 Mar    50    Normal-fair      Near predicted monthly values. 
                                 Depressions to 20% possible 
                                 at times.    

COMMENT: Variable depressions observed Equatorial/N Aus regions. 
Weak ionosphere Antarctic region with increased absorption local 
day. The present proton event remains in progress but is declining. 
Degraded ionospheric conditions possible next three days due 
to further anticipated geomagnetic disturbances. S Aus / NZ / 
Antarctic regions most likely to be affected. SWF's possible 
local day mainly Equatorial/Aus regions. Disturbances possibly 
extending at times to S Aus region. 

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