[Ips-dhfpr] SWS Daily HF Prop Report - 05 February 21 issued 2330 UT on 05 Feb 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/05 FEBRUARY 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (05 FEBRUARY) 
Date   T index  Conditions    
05 Feb   -19    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 20% during local day.
      Depressed by 20% during local night.
      Depressed by 20% after local dawn.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed by 25% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Depressed by 20% 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
Jan      2
Feb      12
Mar      15


2. FORECAST (06 FEBRUARY - 08 FEBRUARY)
Date   T index  Conditions       MUFs                              
06 Feb   -15    Normal           Depressed 15%/near predicted 
                                 monthly values
07 Feb   -10    Normal-fair      Depressed 15%/near predicted 
                                 monthly values    
08 Feb   -20    Normal-fair      15 to 20% below predicted monthly 
                                 values   

COMMENT: SWS HF Communications Warning 4 was issued on 5 February 
and is current for 6 Feb only. MUFs in the Australian region 
were mildly to moderately depressed during UT day 05 February. 
Sporadic E layers were observed, strong at times. For the next 
two UT days, 06-07 February, mild to moderate depressions are 
likely. Further MUF depressions may happen on 08 February in 
response to the predicted increase in the geomagnetic activity.

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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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