[Ips-dhfpr] SWS Daily HF Prop Report - 28 August 21 issued 2336 UT on 28 Aug 2021

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 AUGUST 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 AUGUST) 
Date   T index  Conditions    
28 Aug    11    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
 M4/--    0611UT  possible   lower  Mid East/Indian

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      No data.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 30% during local day.
      Near predicted monthly values during local night.
      Depressed by 20% after local dawn.
   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 (29 AUGUST - 31 AUGUST)
Date   T index  Conditions       MUFs                              
29 Aug    12    Fair             Near predicted monthly values
30 Aug    12    Normal           Near predicted monthly values    
31 Aug    12    Normal           Near predicted monthly values   

COMMENT: SWS SWF HF Communications Warning 21 was issued on 28 
August and is current for 28-29 Aug. MUFs in the Australian region 
on UT day 28 August were mostly near predicted monthly values 
with some mild MUF depressions in the Southern Australian region 
during local dawn and over the Cocos Island during the local 
night. MUFs in the Australian region on UT days 29-31 August 
are expected to be mostly near predicted monthly values with 
the possibility of mild to moderate MUF depressions due to the 
expected increase in geomagnetic activity.

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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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