[Ips-dhfpr] SWS Daily HF Prop Report - 11 September 17 issued 2335 UT on 11 Sep 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/11 SEPTEMBER 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (11 SEPTEMBER) 
Date   T index  Conditions    
11 Sep    33    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available 
   Niue Island Region:
      Enhanced by 40% during local day.
      Enhanced by 40% during local night.
   Northern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
      Enhanced by 20% after local dawn.
   Southern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      No data available over the UT day.
      Proton event in progress, increased absorption observed.

PCA Event : 10MeV Proton/PCA Event Began 11 09 2017 0235UT and is in progress
 and, 100MeV Proton/PCA Event Began 11 09 2017 0215UT and is in progress

Monthly T index:
Month  T index
Aug      10
Sep      5
Oct      4


2. FORECAST (12 SEPTEMBER - 14 SEPTEMBER)
Date   T index  Conditions       MUFs                              
12 Sep    30    Normal           Near to 15% above predicted 
                                 monthly values
13 Sep    30    Fair             Near to 15% above predicted 
                                 monthly values    
14 Sep    15    Fair             Near predicted monthly values   

COMMENT: MUFs were enhanced by 15-40% relative to predicted monthly 
values over the last 24 hours in the Australian/NZ region. HF 
conditions in this region are expected to be slightly higher 
than the monthly predicted values for the next three days due 
increased solar ionising radiation and forecasted active conditions. 
High latitudes experienced poor HF conditions most likely due 
to PCA effects after increased proton levels.

----------------------------------------------------------
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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