thunderstorm

A transient, sometimes violent storm of thunder and lightning, often accompanied by rain and sometimes hail.

A storm accompanied by lightning and thunder, occurring when the atmosphere is in a state of unstable equilibrium, and has a high relative humidity.

A storm accompanied with lightning and thunder.

A storm consisting of thunder and lightning produced by a cumulonimbus, usually accompanied with rain or hail. A more severe thunderstorm can cause mesocyclones.

a storm resulting from strong rising air currents; heavy rain or hail along with thunder and lightning