[Ips-dhfpr] ASWFC Daily HF Prop Report - 23 February 26 issued 2330 UT on 23 Feb 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 FEBRUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 FEBRUARY) 
Date   T index  Conditions    
23 Feb    46    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Niue Island Region:
      Enhanced by 40% during local day.
      Enhanced by 55% during local night.
   Northern Australian Region:
      Depressed by 40% during local day.
      Depressed by 30% during local night.
   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/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 (24 FEBRUARY - 26 FEBRUARY)
Date   T index  Conditions       MUFs                              
24 Feb    60    Normal-fair      Depressed 15%/near predicted 
                                 monthly values
25 Feb    80    Normal           Near predicted monthly values    
26 Feb    88    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 24 was issued on 22 
February and is current for 23-24 Feb. Maximum Usable Frequencies 
(MUFs) were depressed for most of the day in the Australian region. 
Conditions were depressed by up to 40% in the northern Australian 
region and up to 25% in the southern Australian region. Strong 
sporadic E was observed during local night hours at Perth and 
Hobart. Spread F was observed at Hobart, also during local night 
hours. Minor depressions are expected to continue for the first 
half of the UT day 24-Feb. Conditions are expected to improve 
towards predicted monthly values from the second half of 24-Feb 
through to 26-Feb.

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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