[Ips-dhfpr] ASWFC Daily HF Prop Report - 21 February 26 issued 2330 UT on 21 Feb 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 FEBRUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 FEBRUARY) 
Date   T index  Conditions    
21 Feb    95    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
   Niue Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Jan      96
Feb      88
Mar      87


2. FORECAST (22 FEBRUARY - 24 FEBRUARY)
Date   T index  Conditions       MUFs                              
22 Feb    95    Normal           Near predicted monthly values
23 Feb    90    Normal-fair      Near predicted monthly values    
24 Feb    90    Normal-fair      Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) on UT day 21-Feb in 
the Australian region were near predicted monthly values with 
up to 30% enhancement at low latitudes. Spread F was observed 
at Hobart and Canberra during local night hours. MUFs are expected 
to be near predicted monthly values on 22 Feb with chance of 
slightly depressed values on 23-24 Feb due to the increased geomagnetic 
conditions from the Coronal hole high speed wind stream effects.

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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.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au