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Spotter Info |
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SPOTTERS ARE REQUESTED TO SELF-ACTIVATE IF WARNINGS ARE ISSUED
LATER TODAY.
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Weather Facts Hail Stone A frozen form of precipitation consisting of individual balls or lumps of ice called hail stones, produced from cumulonimbus or thunderstorm clouds. Instead of getting pulled down by gravity to the ground, strong updrafts within the cloud push the droplet up into the coldest part of the top of the cloud and the droplet freezes. Then gravity pulls it back down so it starts to melt, but then another updraft pushes it back up to the top of the cloud so it can freeze again. This cycle continues until the hail stone is heavier than the force of the updraft, and it finally falls to the ground as a frozen ball or lump of ice. Rings can usually be identified on the hailstone as a result of the hail stone's history of melting near the bottom of the cloud and freezing near the top of the cloud. A bigger hail stone signifies a longer lifespan within the cloud, which also signifies a strong thunderstorm with strong updrafts.
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