[Ips-dhfpr] SWS Daily HF Prop Report - 04 February 22 issued 2331 UT on 04 Feb 2022

Regional Warning Centre rwc at ips.gov.au
Sat Feb 5 10:31:23 EST 2022


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 FEBRUARY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 FEBRUARY) 
Date   T index  Conditions    
04 Feb    49    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 40% during local night.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Depressed by 30% during local day.
      Enhanced by 30% during local night.
      Depressed by 35% after local dawn.
   Southern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
      Depressed by 25% 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
Jan      46
Feb      38
Mar      41


2. FORECAST (05 FEBRUARY - 07 FEBRUARY)
Date   T index  Conditions       MUFs                              
05 Feb    40    Normal-fair      Depressed 15 to 30%/near predicted 
                                 monthly values
06 Feb    50    Normal-fair      Depressed 15 to 20%/near predicted 
                                 monthly values    
07 Feb    65    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: SWS SWF HF Communications Warning 15 was issued on 4 
February and is current for 4-6 Feb. Eastern Australian region 
maximum usable frequencies (MUFs) were mostly depressed with 
some enhancements during local night. Frequencies were enhanced 
at Niue and in the western Australian region with depressions 
at Learmonth and Perth just prior to local dawn onwards. Variable 
conditions are likely 05-07 February with continuing geomagnetic 
activity expected. Depressions likely at times at mid and high 
latitudes. Isolated shortwave fadeouts are possible on daylight 
HF circuits over the next few days.

----------------------------------------------------------
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
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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