[Ips-dhfpr] SWS Daily HF Prop Report - 31 January 22 issued 2331 UT on 31 Jan 2022

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/31 JANUARY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 JANUARY) 
Date   T index  Conditions    
31 Jan    70    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
   Niue Island Region:
      Enhanced by 30% during local day.
      Enhanced by 45% during local night.
      Enhanced by 35% after local dawn.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Mostly 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
Dec      34
Jan      36
Feb      39


2. FORECAST (01 FEBRUARY - 03 FEBRUARY)
Date   T index  Conditions       MUFs                              
01 Feb    55    Normal-fair      Near to 15% above predicted 
                                 monthly values
02 Feb    25    Fair-poor        Near predicted monthly values/depressed 
                                 20 to 30%    
03 Feb    35    Fair             Depressed 15 to 20%/near predicted 
                                 monthly values   

COMMENT: SWS SWF HF Communications Warning 10 was issued on 30 
January and is current for 31 Jan to 2 Feb. Australian regional 
maximum usable frequencies (MUFs) were near to 45% above predicted 
monthly on 31 January. MUFs are expected to remain near to above 
predicted monthly values for most of the UT day today. Degraded 
conditions may be experienced from late in the UT day 01 February. 
Depressed MUFs, particularly for the southern Australian region, 
are then possible 02-03 February due to an expected increase 
in geomagnetic activity. 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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