Thunderstorms 101

rumble
(verb) to make a low, continuous sound

darken
(verb) to become dark; to make something dark

unmistakable
(adjective) impossible to mistake for something else

roar
(noun) a loud continuous sound made by the wind or sea, or by a machine

occur
(verb) to happen

intense
(adjective) very great in degree or force

evaporate
(verb) to change from a liquid to a gas

moisture
(noun) very small drops of water, either in the air or on a surface

life-sustaining
(adjective) necessary for the maintenance of life

sustain
(verb) to keep something going or in existence; to maintain

condense
(verb) to change from a gas to a liquid or solid

droplet
(noun) a small drop of liquid

altitude
(noun) the height of something above sea level

regulate
(verb) to control something

excess
(noun) an amount that is more than is needed or required

charge
(noun) a quantity of electricity accumulated on an object

buildup
(noun) an accumulation of something, especially over a period of time

barrier
(noun) something that prevents or hinders movement or access

hazardous
(adjective) involving danger or risk

excessive
(adjective) more than is necessary, reasonable, or desirable

countless
(adjective) too many to be counted