[Ips-dhfpr] IPS Daily HF Prop Report - 11 November 07

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 11/2330Z NOVEMBER 2007 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 NOVEMBER) 
Date   T index  Conditions    
11 Nov   -26    Normal-fair    

Flares: none.

MUFs:
   Equatorial Niue Region:
      Depressed by 25% during local day,
      Depressed by 35% during local night.
      Depressed by 35% after local dawn.
   Northern Australian Region:
      Mostly near predicted monthly values,
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day,
      Near predicted monthly values 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 November:  11
2. FORECAST (12 NOVEMBER - 14 NOVEMBER)
Date   T index  Conditions       MUFs                              
12 Nov   -20    Normal-fair      Near predicted monthly values 
                                 to 15-25% depressed. 
13 Nov   -20    Normal-fair      Near predicted monthly values 
                                 to 15-25% depressed.     
14 Nov   -15    Normal-fair      Near predicted monthly values 
                                 to 10-20% depressed.    
COMMENT: General and greater than expected depressions in MUFs 
still observed across Australian/NZ/SW-Pacific region due to 
lack of solar ionisation. SW Pacific region particularly affected. 
PNG sonde coverage is out but MUFs assumed similarly affected. 
Expect to remain heavily depressed for next two days at least. 
Onset of coronal hole elevated solar wind speed expected 13 Nov 
should energise geomagnetic field and the effect on such a weak 
ionosphere may be to raise ionisation and MUFs around 14 Nov. 
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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
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