What makes a thunderstorm severe? Understanding tornadoes, wind, and hail

A thunderstorm is classified as severe if it features tornado potential, wind gusts of at least 58 mph, or hail at least one inch in diameter. Supercell storms with rotation, even without a confirmed tornado, meet severe criteria due to their risk. Severe hail typically forms in regions where warm, moist air from the Gulf of Mexico collides with colder Canadian air, creating unstable conditions ideal for large hailstones. Early recognition of these hazards is crucial for preparedness and safety.