automatically determining an onset of wellbore screen-out when a time it takes for an upward trend of corrected pressure data of hydraulic fluid from a hydraulic fracturing well site to reach a maximum allowable pressure of the hydraulic fluid, relative to a time required to move one wellbore volume of the hydraulic fluid at a present slurry rate, is less than a value based on a current condition of a fracturing operation;

selecting at least one type of mitigation action based on the automatic determination of the onset of the wellbore screen-out; and

mitigating the wellbore screen-out with the selected at least one type of mitigation action.