a large amount of water covering an area

a large amount of water covering an area that is usually dry flood a long period of time when there is little or no rain drought a mass of snow, ice and rock that falls down the side of a mountain avalanche a mountain with a large opening at the top through which gases and lava (= hot liquid rock) are forced out into the air, or have been in the past volcano a period of unusually hot weather heatwave

a violent tropical storm in which strong winds move in a circle tornado an extremely large wave in the sea caused, for example, by an earthquake tsunami an incident in which lightning hits somebody/something lightning struck an occasion when a volcano suddenly throws out burning rocks, smoke, etc. eruption small balls of ice that fall like rain hail

a snowstorm with very strong winds blizzard a storm during which hail falls from the sky hailstorm a storm in a desert in which sand is blown into the air by strong winds sandstorm a storm with thunder and lightning and usually very heavy rain thunderstorm a sudden flood of water caused by heavy rain flashflood a sudden, violent shaking of the earth’s surface earthquake