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What is the difference between sleet, freezing rain and snow?

WSOC Charlotte logo WSOC Charlotte 1/15/2022 National Oceanic and Atmospheric Administration

A winter storm is approaching and is expected to bring different types of frozen precipitation. Below is NOAA’s explanation on the difference between sleet, freezing rain and snow.

[ALSO READ: Grocery stores seeing empty shelves ahead of weekend winter storm]

Sleet. This occurs when snowflakes only partially melt when they fall through a shallow layer of warm air.

The slushy drops refreeze as they next fall through a deep layer of freezing air above the surface, and eventually reach the ground as frozen rain drops that bounce on impact.

Depending on the intensity and duration, sleet can accumulate on the ground much like snow.

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Freezing rain: This happens when snowflakes descend into a warmer layer of air and melt completely.

When the liquid water drops fall through another thin layer of freezing air just above the surface, they don’t have enough time to refreeze before reaching the ground.

Because they are “supercooled,” they instantly refreeze upon contact with anything that that is at or below freezing (32 degrees), creating a glaze of ice on the ground, trees, power lines or other objects.

Even light accumulations can cause dangerous travel, while heavier amounts can cause significant damage to trees and power lines.

A significant accumulation of freezing rain lasting several hours or more is called an ice storm.

>> Download our WSOC-TV app and keep up with winter weather conditions wherever you go.

Snow: Most precipitation that forms in wintertime clouds starts out as snow because the top layer of the storm is usually cold enough to create snowflakes.

Snowflakes are collections of ice crystals that cling to each other as they fall toward the ground.

Precipitation continues to fall as snow when the temperature remains at or below 32 degrees from the cloud base to the ground.

(Watch the video below: Grocery stores seeing empty shelves ahead of weekend winter storm)

The National Weather Service contributed to this report.


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