[Ips-dhfpr] SWS Daily HF Prop Report - 24 May 21 issued 2330 UT on 24 May 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 MAY 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 MAY) 
Date   T index  Conditions    
24 May    14    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% 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
Apr      12
May      21
Jun      24


2. FORECAST (25 MAY - 27 MAY)
Date   T index  Conditions       MUFs                              
25 May    15    Normal           Near predicted monthly values
26 May     0    Fair-poor        Near predicted monthly values/depressed 
                                 10 to 30%    
27 May     5    Fair             Near predicted monthly values/depressed 
                                 10 to 20%   

COMMENT: SWS SWF HF Communications Warning 16 was issued on 22 
May and is current for 23-25 May. MUFs in the Australian region 
on UT day 24 May were mostly near predicted monthly values with 
some minor depressions in the Niue Island region during the local 
day. There were also some minor enhancements in the Southern 
Australian region during the local night. Normal HF conditions 
may be expected for most parts of the UT day 24 May. Mild to 
strong MUF depressions may occur on UT days 26-27 May due to 
the expected increase in geomagnetic activity on these days.

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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
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
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