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Question: 1 / 400

What conditions are necessary for hail formation?

Low humidity and high temperatures

Strong updrafts in thunderstorms

Hail formation primarily requires strong updrafts within thunderstorms. This is because updrafts carry water droplets into the colder upper regions of a thunderstorm. When these droplets reach high altitudes, they freeze, forming small hailstones. If the updrafts are strong enough, they can lift these frozen particles multiple times back into the cloud, allowing additional layers of water to freeze onto the hailstones, making them larger as they fall. The presence of robust, sustained updrafts is essential for producing the sizable hail that can cause significant damage.

Other atmospheric conditions like humidity, pressure, and frontal interactions, while they may influence overall storm dynamics and development, are not the critical factors in the actual formation of hail.

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Calm winds and high pressure

Cold fronts and warm fronts colliding

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