Accelerate Interview Preparation Practice Test

TS is the shorthand used in weather notation to indicate a thunderstorm. A thunderstorm is a convective storm that can produce lightning, thunder, heavy rain, and sometimes hail or strong winds. The term thunder on its own refers only to the sound produced by the storm, not the weather event itself, so it isn’t used as the descriptor. A summer shower is not a formal meteorological term, and a tropical storm denotes a different phenomenon altogether—a tropical cyclone. You might also see combinations like TSRA, which means a thunderstorm with rain, illustrating how TS specifically flags the thunderstorm aspect. Recognizing TS helps you expect convective weather hazards that can affect visibility, wind, and safety.