Transcript Winter Storms

By: Neko and Christian

Snow is commonly formed when water vapor
undergoes deposition.

Which is when water vapor changes directly to ice
without first becoming a liquid.

High in the atmosphere at a temperature of less
than 32 degrees Fahrenheit and falls to the
ground.

Thunder snow is when thunder and lighting occur
during a snowstorm.

This occurs most often in late winter or early
spring.

To get thunder snow, you need a mass of cold air
on top of warm air, plus moist air closer to the
ground.

Frost is white ice crystals that form on a surface,
like the ground or leaves of a plant.

Frost is created when the air temperature drops
below freezing and the water vapor in the air
freezes into ice crystals.

An ice storm is a type of winter storm caused by
freezing rain.

The U.S. National Weather Service defines an ice
storm as a storm which results in the
accumulation of at least 0.25-inch of ice on
exposed surfaces.

Snowflakes are made of ice crystals.

Each snowflake is six-sided and made of as many as 200
ice crystals.

Snowflake form in clouds where the temperature is below
freezing.

The ice crystals form around tiny bits of dirt that been
carried up into the atmosphere by the wind.

As the snow crystals grow, they become heavier and fall
toward the ground.

Freezing rain is just rain that falls onto a
surfaces, such as trees, cars, and roads forming a
coating or glaze of ice.

Even small accumulations of ice can cause a
significant hazard.

Sleet is rain drops that freeze into ice pellets
before reaching the ground.

Sleet usually bounces when hitting a surface and
does not stick to an object.

http://www.weatherwizkids.com/weather-winter-storms.htm