[Ips-dhfpr] IPS Daily HF Prop Report - 07 June 12 issued 2352 UT on 07 Jun 2012

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 JUNE 2012 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 JUNE) 
Date   T index  Conditions    
07 Jun    77    Fair-normal    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for June:  78


2. FORECAST (08 JUNE - 10 JUNE)
Date   T index  Conditions       MUFs                              
08 Jun    75    Normal           Near predicted monthly values
09 Jun    75    Normal           Near predicted monthly values    
10 Jun    75    Normal           Near predicted monthly values   

COMMENT: HF frequency conditions were averaging near Normal for 
mid and low latitudes during the day but still depressed during 
the night, even though the ongoing geomagnetic activity from a 
high-speed solar wind stream from large coronal hole (CH520), 
began to wane. Strong overnight spread-F at low and mid latitudes as 
the 4th day of geomagnetic activity high-speed solar-wind stream 
takes effect. 

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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.

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