[Ips-dhfpr] IPS Daily HF Prop Report - 05 September 07

rwc rwc at ips.gov.au
Thu Sep 6 09:48:45 EST 2007


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 05/2330Z SEPTEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 SEPTEMBER) 
Date   T index  Conditions    
05 Sep     8    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Near predicted monthly values during local day,
      Enhanced by 20% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 25% over the UT day.

PCA Event : No event.

Predicted Monthly T index for September:  10
2. FORECAST (06 SEPTEMBER - 08 SEPTEMBER)
Date   T index  Conditions       MUFs                              
06 Sep     8    Normal           near predicted monthly values 
07 Sep    10    Normal           near predicted monthly values     
08 Sep    10    Normal           near predicted monthly values    
COMMENT: Generally expect frequencies to be returning to near 
monthly averages today as solar coronal hole and merging of solar-geomagnetic 
fields effects decline. Next recurrent hole expected to take 
effect on 6th Sept now seems unlikely. Very low ionistation from 
AR970 may delay ionospheric recovery from last few days depression. 
Strong sporadic E was observed at stations across a wide range 
of latitudes and longitudes (Darwin, Canberra, Hobart, Nuie), 
particularly at night. Spread F was also observed at night across 
a range of latitudes to the east (Hobart, Nuie).These have occurred 
on several nights this week and may degrade communications if 
re-occurring. 
----------------------------------------------------------
For an explanation of some of the terms in this report, goto
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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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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