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

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 MAY 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 MAY) 
Date   T index  Conditions    
21 May    16    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Apr      12
May      21
Jun      24


2. FORECAST (22 MAY - 24 MAY)
Date   T index  Conditions       MUFs                              
22 May     5    Normal           Near predicted monthly values/depressed 
                                 10 to 30%
23 May     7    Normal           Near predicted monthly values    
24 May    10    Normal           Near predicted monthly values   

COMMENT: MUFs in the Australian region on UT day 21 May were 
mostly near predicted monthly values with some mild depressions 
in the Niue Island region during the local day. For 22-24 May, 
MUFs are expected to be mostly near predicted monthly values; 
mild to moderate depressions are possible on UT day 22 May.

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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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