Winter Weather

Understand why winter weather involves much more than snowfall.

About Winter Weather

Winter weather can combine snow, freezing rain, sleet, strong wind, low visibility, and dangerously low temperatures. Small temperature differences in the atmosphere can determine whether a storm brings rain, ice, or snow.

Visual learning: These pages use real Wikimedia Commons and scientific weather imagery. Final image URLs should be browser-tested before deployment.

Thunderstorm — ThunderstormThunderstorms form when warm moist air rises into an unstable atmosphere.

Tornado — TornadoTornadoes are rapidly rotating columns of air connected to thunderstorms.

Hurricane — HurricaneTropical cyclones are organized rotating storm systems fueled by warm ocean water.

Snowstorm — SnowstormWinter storms can combine snow, wind, cold, and low visibility.

Snowstorms

Snowstorms form when cold air and moisture overlap.

Blizzards

A blizzard is defined by strong wind and very low visibility in snow.

Ice Storms

Freezing rain can coat surfaces with glaze ice.

Lake-Effect Snow

Cold air moving over warmer lake water can produce intense snow bands.

Cold Waves

Arctic air outbreaks can produce dangerous cold far south of the polar region.

Wind Chill

Wind removes heat from exposed skin more quickly.

Travel

Snow and ice sharply reduce road traction.

Cold Safety

Layered clothing, dry insulation, shelter, and limiting exposure help prevent cold injury.

Snowstorms

Large systems can transport moisture long distances before it freezes into snow.

Blizzards

Heavy falling snow is not required if existing snow is blowing.

Ice Storms

Heavy ice damages trees, power lines, roads, and communication systems.

Lake-Effect Snow

The Great Lakes are famous for this effect.

Cold Waves

Buildings, pipes, agriculture, transportation, and power systems can all be affected.

Wind Chill

Wind chill estimates how cold conditions feel to exposed human skin.

Travel

Staying off roads during severe winter storms may be safer than attempting unnecessary travel.

Cold Safety

Frostbite and hypothermia require prompt attention.