[Ips-dhfpr] IPS Daily HF Prop Report - 09 September 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 09/2330Z SEPTEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 SEPTEMBER) 
Date   T index  Conditions    
09 Sep    -2    Normal         

Flares: none.

MUFs:
slightly below predicted monthly values

PCA Event : No event.

Predicted Monthly T index for September:  10
2. FORECAST (10 SEPTEMBER - 12 SEPTEMBER)
Date   T index  Conditions       MUFs                              
10 Sep     0    Normal           10 to 15% below predicted monthly 
                                 values 
11 Sep     5    Normal           5 to 10% below predicted monthly 
                                 values     
12 Sep    10    Normal           about 5% below predicted monthly 
                                 values    
COMMENT: Spread F observed at some Australian latitudes at night 
which may degrade HF comms by multipath if re-occurring. Advisable 
to check ionograms for station near reflection point of the HF 
circuit http://www.ips.gov.au/HF_Systems/1/3 Low latitudes suffering 
nighttime depressions and mid-latitudes still below average despite 
the return to quiet geomagnetic conditions. Geomagnetic conditions 
expected to be quiet so the ionosphere should recover to monthly 
averages over the next 3 days although the lack of solar active 
regions with ionising EUV radiation will make this recovery slow. 
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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
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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