[Ips-dhfpr] SWS Daily HF Prop Report - 18 August 17 issued 2351 UT on 18 Aug 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 AUGUST 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 AUGUST) 
Date   T index  Conditions    
18 Aug    11    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      No data available during local night.
   Niue Island Region:
      Enhanced 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 25% 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 (19 AUGUST - 21 AUGUST)
Date   T index  Conditions       MUFs                              
19 Aug    10    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%
20 Aug    10    Normal           Near predicted monthly values/depressed 
                                 10 to 30%    
21 Aug    10    Normal           Near predicted monthly values   

COMMENT: Variable HF conditions observed over the last 24 hours 
with moderate MUF enhancements and depressions over the entire 
region. Similar conditions are expected for the 19AUg-20Aug with 
possible MUF depressions and enhancements for Equatorial/Northern 
AUS and Southern AUS/NZ regions and disturbed ionospheric support 
for Antarctic regions. MUFs expected to return to monthly predicted 
values on 21Aug.

----------------------------------------------------------
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.

Space Weather Services              email: asfc at bom.gov.au
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