[Ips-dhfpr] SWS Daily HF Prop Report - 17 September 19 issued 2340 UT on 17 Sep 2019

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 SEPTEMBER 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 SEPTEMBER) 
Date   T index  Conditions    
17 Sep    -3    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Aug      -3
Sep      -14
Oct      -16


2. FORECAST (18 SEPTEMBER - 20 SEPTEMBER)
Date   T index  Conditions       MUFs                              
18 Sep    -5    Normal           Near predicted monthly values
19 Sep    -5    Normal           Near predicted monthly values    
20 Sep    -5    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region were mostly near predicted monthly values during UT day 
17 September. Mild to moderate enhancements were observed in 
Southern Australian region during the local night. Minor depressions 
were recorded in low latitude Australian region during local 
day. Sporadic-E and Spread-F occurrences were observed over some 
sites. For the next three UT days, 18-20 September, MUFs are 
expected to be mostly near predicted monthly values.

----------------------------------------------------------
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
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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