[Ips-dhfpr] SWS Daily HF Prop Report - 16 August 17 issued 2350 UT on 16 Aug 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 AUGUST 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 AUGUST) 
Date   T index  Conditions    
16 Aug    12    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Niue Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% 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
Jul      10
Aug      6
Sep      5


2. FORECAST (17 AUGUST - 19 AUGUST)
Date   T index  Conditions       MUFs                              
17 Aug    10    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%
18 Aug     0    Normal-fair      Near predicted monthly values/depressed 
                                 20 to 40%    
19 Aug    -5    Normal           Near predicted monthly values/depressed 
                                 20 to 40%   

COMMENT: Variable HF conditions observed over the last 24 hours 
with MUFs mostly near predicted monthly values. Some minor depressions 
observed for Northern AUS/Equatorial stations, enhancements for 
Southern AUS/NZ regions and continued disturbed ionospheric support 
for Antarctic regions. Chance of enhancements for Equatorial/Northern 
AUS to Southern AUS/NZ regions during local day for 17Aug. Possible 
MUF depressions of approx -20% for Southern AUS/NZ regions to 
Northern AUS regions in the latter half of the UT day 17Aug extending 
through to 19Aug due to anticipated geomagnetic activity. Poor 
ionospheric support for Antarctic regions 17Aug-19Aug.

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

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