[Ips-dhfpr] SWS Daily HF Prop Report - 25 August 21 issued 2331 UT on 25 Aug 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/25 AUGUST 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (25 AUGUST) 
Date   T index  Conditions    
25 Aug    22    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Depressed by 15% during local night.
      Depressed by 20% after local dawn.
   Niue Island Region:
      No data available during local day.
      No data available during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   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
Jul      17
Aug      25
Sep      28


2. FORECAST (26 AUGUST - 28 AUGUST)
Date   T index  Conditions       MUFs                              
26 Aug    16    Normal           Near predicted monthly values/depressed 
                                 10 to 30%
27 Aug    16    Normal           Near predicted monthly values/depressed 
                                 10 to 20%    
28 Aug    20    Normal           Near predicted monthly values   

COMMENT: MUFs in the Australian region on UT day 25 August were 
near predicted monthly values, with some mild MUF depressions 
in the Northern Australian. MUFs in the Australian region on 
UT days 26 and 27 August are expected to be mostly near predicted 
monthly values with the possibility of minor to mild MUF depressions 
due to the expected increase in geomagnetic activity levels. 
Mostly normal MUFs may expected on 28 August.

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For an explanation of some of the terms in this report, go to
https://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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