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Home » SHV Home » Winter
» Warning Criteria
Warning Criteria
Type
|
Criteria
|
Winter Storm Warning
|
4 inches or more of
snow (4 to 8, 6 to 8 etc).
1/2 inch or more of sleet.
Freezing rain with damaging ice accumulations (1/4 inch thick or more).
Events with more than one hazard (i.e., freezing rain and snow).
|
Heavy Snow Warning
|
Accumulation of 4
inches or more in 12 hours.
Accumulation of 6 inches or more in 24 hours. |
Blizzard Warning
|
3 hours or longer:
Sustained winds or frequent gusts > 35 mph, and considerable falling
and/or blowing snow and
frequently reducing visibilities to less than 1/4 mile. |
Ice Storm Warning
|
A damaging coating of ice (1/4
inch thick or more) on streets, trees, buildings, wires etc. |
Freeze Warning
|
Issued generally for the first
widespread freeze of the winter, a late winter freeze, or a hard freeze
event after a period of warm temperatures. |
|
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