[Ips-dhfpr] SWS Daily HF Prop Report - 18 January 22 issued 2332 UT on 18 Jan 2022

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SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 JANUARY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 JANUARY) 
Date   T index  Conditions    
18 Jan    49    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.4    1749UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values with depressions
      to 25% 06-08 and 12 UT. Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed to 20% during local day.
      Near predicted monthly values otherwise.

PCA Event : No event.

Monthly T index:
Month  T index
Dec      34
Jan      36
Feb      39


2. FORECAST (19 JANUARY - 21 JANUARY)
Date   T index  Conditions       MUFs                              
19 Jan    50    Normal           Near predicted monthly values
20 Jan    35    Normal-fair      Near predicted monthly values    
21 Jan    40    Normal           Near predicted monthly values   

COMMENT: SWS SWF HF Communications Warning 4 was issued on 16 
January and is current for 17-19 Jan. Australian regional maximum 
usable frequencies (MUFs) were near predicted monthly values 
to enhanced on 18 January. Occasional strong sporadic E observed 
at mid latitudes. MUFs are expected to be mostly near predicted 
monthly values to mildly enhanced on 19 January. Near predicted 
monthly values with some mild depressions are possible on 20 
and 21 January if the predicted geomagnetic activity occurs.

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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
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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