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A snow day in the United States and Canada is a day that school classes are cancelled or delayed by snow, heavy ice, or extremely low temperatures. Similar measures occur in response to flooding , tornado watches , and severe weather (storms, hurricanes , dense fog, heavy snow, etc.).
Severe weather can occur under a variety of situations, but three characteristics are generally needed: a temperature or moisture boundary, moisture, and (in the event of severe, precipitation-based events) instability in the atmosphere.
School disruptions are a necessary precaution, either allowing kids to get home and take safety measures in advance of extreme weather or, afterward, protecting them from unsafe spaces.
The main types of extreme weather include heat waves, cold waves and heavy precipitation or storm events, such as tropical cyclones. The effects of extreme weather events are economic costs, loss of human lives, droughts, floods, landslides. Severe weather is a particular type of extreme weather which poses risks to life and property.
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Parts of Texas and Louisiana were under a tornado watch Thursday night as a line of thunderstorms battered the south-central U.S., threatening the region with large hail, damaging winds and heavy ...
The phenomenon, which local television station KSDK reported was heard throughout the day Sunday, sounded more muffled than a regular thunderclap. Because it was paired with sleet, residents were ...
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