[Ips-dhfpr] IPS Daily HF Prop Report - 08 November 07

rwc rwc at ips.gov.au
Fri Nov 9 10:27:11 EST 2007


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 NOVEMBER) 
Date   T index  Conditions    
08 Nov    -8    Normal-fair    

Flares: none.

MUFs:
   Equatorial PNG/Niue Region:
      No data available during local day,
      No data available during local night.
   Northern Australian Region:
      Mostly near predicted monthly values,
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Predicted Monthly T index for November:  11
2. FORECAST (09 NOVEMBER - 11 NOVEMBER)
Date   T index  Conditions       MUFs                              
09 Nov   -10    Normal-fair      Near predicted monthly values 
                                 to 15% depressed. 
10 Nov   -10    Normal-fair      Near predicted monthly values 
                                 to 15% depressed.     
11 Nov     0    Normal-poor      Near predicted monthly values 
                                 to 10% depressed.    
COMMENT: IPS HF Communications Warning 28 was issued on 7 November 
and is current for interval 8-10 November. General depressions 
in MUFs still observed across Australian/NZ region due to lack 
of solar ionising EUV but slightly recovered compared with previous 
days. Sonde coverage across PNG and Pacific is out but MUFs assumed 
similarly affected. Spread F again widely observed. An anomalous 
enhancement was again observed across the northern Australian 
sector post for 2-3hours before local midnight but reduced compared 
with previous days. Depressed MUFs compared with predicted monthly 
averages are expected to continue for the next 2 days at least. 
The possible onset of a coronal hole HSSWS over the weekend could 
elevate geomagnetic activity and affect MUFs but expected to 
only be moderate. 
----------------------------------------------------------
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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