[Ips-dhfpr] IPS Daily HF Prop Report - 17 July 14 issued 2330 UT on 17 Jul 2014

[Regional Warning Centre]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 JULY 2014 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 JULY) 
Date   T index  Conditions    
17 Jul    57    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 45% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 40% during local night.
      Depressed by 25% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day.
      Depressed by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jun      65
Jul      92
Aug      90


2. FORECAST (18 JULY - 20 JULY)
Date   T index  Conditions       MUFs                              
18 Jul    75    Normal           Near predicted monthly values/depressed 
                                 10 to 20%
19 Jul    70    Normal           Near predicted monthly values/depressed 
                                 10 to 20%    
20 Jul    70    Normal           Near predicted monthly values/depressed 
                                 10 to 20%   

COMMENT: MUFs were generally depressed throughout the entire 
Australasian region for most of the day, more pronounced at low 
latitudes. This is again due to the lack of ionising EUV and 
X-rays from the low spot count on the solar disc. This is likely 
to continue for the next 2-3 days. There was nighttime spread 
F observed at near-equatorial and southern latitudes latitudes,suggesting 
movement of ionisation away ('transport') from the region, as 
geomagnetic activity has been Quiet, and this has probably contributed 
to the MUF depressions.

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For an explanation of some of the terms in this report, go to
http://www.ips.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

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