Ice Storm

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by Sargis777
Last updated 6 years ago

Discipline:
Science
Subject:
Environmental Studies

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Ice Storm

Broken tree branches cover a foot bridge in Richmond Hill, just north of Toronto.

ICE STORMThe U.S. National Weather Service defines an ice storm as a storm which results in the accumulation of at least 0.25-inch (6.4 mm) of ice on exposed surfaces.[2] From 1982 to 1994, ice storms were more common than blizzards and averaged 16 per year.[3] They are not violent storms, but instead commonly perceived as gentle rains occurring at temperatures just below freezing. For this reason people may be unaware of the danger if it happens overnight.Formation. The formation of ice begins with a layer of above-freezing air above a layer of sub-freezing temperatures closer to the surface. Frozen precipitation melts to rain while falling into the warm air layer, and then begins to refreeze in the cold layer below. If the precipitate refreezes while still in the air, it will land on the ground as sleet.

Natural Disaster.Ice Storm

These pictures were taken by Lake Geneva during the winter of 2005.

A car is buried beneath ice-covered branches in Richmond Hill, north of Toronto.


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