Severe Winter Weather - WECT TV6-WECT.com:News, weather & sports Wilmington, NC

Severe Winter Weather

When winter weather is threatening southeastern North Carolina, you may hear a variety of terms like "wind chill advisory" or "winter storm warning" or "winter weather advisory".  Here's what conditions are expected to prompt advisories, watches, and warnings to be issued in our area by the National Weather Service (NWS):

Winter Storm Watch:  at least 2" of snow or 1/4" of ice is expected in up to about 36 hours in the future.

Winter Storm Warning:  at least 2" of snow or 1/4" of ice is expected in up to about 24 hours in the future.  (If confidence is high about the precipitation type, a more specific heavy snow warning or ice storm warning would be issued by the NWS).

Blizzard Warning:  snow or blowing snow with wind at least 35 mph reducing visibility below 1/4 mile for 3 hours or more.

Winter Weather Advisory:  expected snow and/or sleet accumulation is expected to average between 1-2 inches, or ice accumulation less than 1/4 inch.

Wind Chill Advisory:  wind chill values are expected to be below 0 F.

Wind Chill Watch:  wind chill values are expected to be below -15 F in up to about 36 hours in the future.

Wind Chill Warning:  wind chill values are expected to be below -15 F in up to about 24 hours in the future.

Freeze Watch:  issued when temperatures are expected to be below freezing (32 F) for several hours at the beginning or end of the growing season (when crops and plants are likely to be damaged) in between 24 and 36 hours in the future.

Freeze Warning:  issued when temperatures are expected to be below freezing (32 F) for several hours at the beginning or end of the growing season (when crops and plants are likely to be damaged) in less than 24 hours in the future.

Frost Advisory:  issued at the beginning or end of the growing season when frost is expected to form and damage crops and plants; air temperatures are not necessarily below freezing (32 F).

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