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Winter storms can range from freezing rain or ice to a few hours of moderate snowfall, to a blizzard that lasts for several days. Many winter storms are accompanied by dangerously low temperatures, power outages, and unpredictable road conditions.
Flooding due to snowmelt most often occurs in the spring when rapidly warming temperatures quickly melt the snow. The water runs off the already saturated ground into nearby streams and rivers, causing them to rapidly rise and, in some cases, overflow their banks.
The most common cause of flooding is water due to rain and/or snowmelt that accumulates faster than soils can absorb it or rivers can carry it away. Approximately seventy-five percent of all Presidential disaster declarations are associated with flooding.
The effect of unpredictable temperature shifts can cause snow to fall one day and quickly melt the next – setting the stage for snowmelt flooding to occur. Snowmelt flooding can cause costly home damage, but there are many steps you can take to prevent this from happening to your property.
Nov 5, 2018 · Sudden thaws of heavy snow and ice are another cause of winter flooding. Snowmelts can release huge amounts of water in short periods of time, and frozen ground prevents the melt water from penetrating the ground and being absorbed.
Dec 21, 2022 · Always give snowplows and responders the right of way. If you must travel, know road conditions before you leave home. View the latest road and traffic conditions at 511virginia.org or by calling 511 or viewing the 511 Virginia mobile app.
Floods may: Result from rain, snow, coastal storms, storm surges, and overflows of dams and other water systems. Develop slowly or quickly – Flash floods can come with no warning. Cause outages, disrupt transportation, damage buildings, and create landslides. Do not walk, swim, or drive through flood waters.
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