[Ips-dhfpr] ASWFC Daily HF Prop Report - 22 February 26 issued 2330 UT on 22 Feb 2026 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 FEBRUARY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 FEBRUARY) 
Date   T index  Conditions    
22 Feb    89    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 30% after local dawn.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 25% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

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


2. FORECAST (23 FEBRUARY - 25 FEBRUARY)
Date   T index  Conditions       MUFs                              
23 Feb    60    Fair             Depressed 15 to 25%/near predicted 
                                 monthly values
24 Feb    70    Normal-fair      Depressed 10 to 15%/near predicted 
                                 monthly values    
25 Feb    85    Normal-fair      Near predicted monthly values   

COMMENT: Maximum Usable Frequencies (MUFs) in the Australian 
region became depressed towards the end of the UT day 22-Feb 
due to current geomagnetic activity. MUFs in the Australian region 
decreased from near monthly predicted values to 25–30% below 
predicted values during local dawn hours. Strong sporadic E was 
observed during local night hours, and spread F was also observed 
at Hobart. MUFs in the Antarctic region were also depressed by 
15%. Depressions of 15-25% are expected over 23-24 Feb due to 
ongoing geomagnetic activity, before recovering to near monthly 
predicted values by 25-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