A bad snowstorm is called a blizzard.
Blizzards are a severe snowstorm that occur with winds in excess of 35 mph and visibility of less than a 1/4 mile for more than 3 hours.
Blizzards can also occur after snowfall when high winds cause whiteouts (fallen snow blowing around) and snowdrifts (huge mountains of snow), which decrease visibility.
Snowstorms happen at night because the night air cools faster which then causes warm air to push up quicker which is call heavy updraft,
When this happens this can cause high winds and extreme weather at night.
The difference between snow and a snowstorm is that snow is just snow falling from the sky in small amounts or large amounts without wind.
A snowstorm is when snow falls with wind and heavy wind and the snowfall can occur in really large amounts and even drift and pile up.
A snowstorm is a storm in which snow falls heavily.
During a snowstorm is may or may not thunder as well.
There have been times where I live I've had it thunder during a snowstorm but most often the snowstorm occurs with just heavy snow and wind blowing.
A storm where precipitation falls as snow is called a snowstorm.
During the winter, most precipitation forms as snow within the clouds because temperatures at the top of the storm are cold enough to make snowflakes.
Apart from large amounts of snowfall, at least 2 inches (5 cm) of snow in places where snow is not typical is considered a snowstorm.
However, snowfall of more than 6 inches (15 cm) is disruptive and is considered a snowstorm or winter storm in other parts of the country.
Winter storms create a higher risk of car accidents, hypothermia, frostbite, carbon monoxide poisoning, and heart attacks from overexertion.
Winter storms including blizzards can bring extreme cold, freezing rain, snow, ice and high winds.
The winter storms can last a few hours or several days.
Snow storms are usually caused by rising moist air within an extratropical cyclone (low pressure area.
The cyclone forces a relatively warm, moist air mass up and over a cold air mass.
If the air near the surface is not sufficiently cold over a deep enough layer, the snow will fall as rain instead.
A winter storm is a combination of heavy snow, blowing snow and/or dangerous wind chills.
A winter storm is life-threatening.
Blizzards are dangerous winter storms that are a combination of blowing snow and wind resulting in very low visibilities.