thun·der·storm 
/ˈθʌndɚˌstoɚm/ noun
plural thun·der·storms /ˈθʌndɚˌstoɚm/ noun [count] : a storm with lightning and thunder
▪ There are thunderstorms in the forecast. ▪ The weather service has issued a severe thunderstorm warning.
▪ There are thunderstorms in the forecast. ▪ The weather service has issued a severe thunderstorm warning.
