[Ips-dhfpr] IPS Daily HF Prop Report - 14 September 07

rwc rwc at ips.gov.au
Sat Sep 15 09:52:49 EST 2007


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 14/2330Z SEPTEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 SEPTEMBER) 
Date   T index  Conditions    
14 Sep     4    Normal         

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      Depressed by 15% during local day,
      Depressed by 35% during local night.
   Northern Australian Region:
      Depressed by 15% over the UT day,
      Near predicted monthly values during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Predicted Monthly T index for September:  10
2. FORECAST (15 SEPTEMBER - 17 SEPTEMBER)
Date   T index  Conditions       MUFs                              
15 Sep     0    Normal           10 to 20% below predicted monthly 
                                 values 
16 Sep     0    Normal           10 to 20% below predicted monthly 
                                 values     
17 Sep     5    Normal           Near predicted monthly values    

COMMENT: MUF depressions continued in the equatorial and N.Aus 
regions 14 Sep, particularly during the local day. The S.Aus 
and Antarctic regions were mostly normal with some mild enhancements 
observed overnight. Continuing mild depressions 10-20% are expected 
15-16 Sep in the absence of solar active regions and subsequent 
low levels of EUV. Unsettled geomagnetic conditions on 15 Sep 
may also act to further depress MUFs. Continuing Spread F conditions 
likely in the S.Aus/NZ regions overnight. 

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