[Ips-dhfpr] SWS Daily HF Prop Report - 01 February 22 issued 2330 UT on 01 Feb 2022

Regional Warning Centre rwc at ips.gov.au
Wed Feb 2 10:30:58 EST 2022


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/01 FEBRUARY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (01 FEBRUARY) 
Date   T index  Conditions    
01 Feb    61    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced 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      46
Feb      38
Mar      41


2. FORECAST (02 FEBRUARY - 04 FEBRUARY)
Date   T index  Conditions       MUFs                              
02 Feb    40    Fair-poor        Near predicted monthly values/depressed 
                                 15 to 20%
03 Feb    15    Poor-fair        Depressed 20 to 30%/near predicted 
                                 monthly values    
04 Feb    50    Fair-normal      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. SWS Preliminary HF 
Communications Warning 11 was issued on 31 January and is current 
for 2-3 Feb. Australian regional maximum usable frequencies (MUFs) 
were near to 20% above predicted monthly values on 1 February. 
Degraded HF conditions are expected for today, with regional 
MUFs variable due to the onset of geomagnetic activity. Mostly 
near predicted monthly values are at this stage expected for 
the northern Australian region and depressed conditions are expected 
for southern Australian region from later today. Degraded and 
depressed conditions are then possible after local dawn on 03 
February. 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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