[Ips-dhfpr] SWS Daily HF Prop Report - 20 July 21 issued 2330 UT on 20 Jul 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 JULY 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 JULY) 
Date   T index  Conditions    
20 Jul    19    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      No data available.
   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 20% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values.

PCA Event : No event.

Monthly T index:
Month  T index
Jun      13
Jul      23
Aug      26


2. FORECAST (21 JULY - 23 JULY)
Date   T index  Conditions       MUFs                              
21 Jul    20    Normal           Near predicted monthly values
22 Jul    20    Normal           Near predicted monthly values    
23 Jul    20    Normal           Near predicted monthly values   

COMMENT: MUFs in the Australian region on UT day 20 July were 
mostly near predicted monthly values. There were some mild MUF 
depressions in the Northern Australian region during the local 
day and in the Cocos Island region. There were also some enhancements 
in the Southern Australian region during the local night. MUFs 
in the Australian region are expected to be mostly near predicted 
monthly values on UT days 21-23 July.

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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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