Weather Types

by Kyle Riggs

Tornadoes

Tornadoes form from air rotating because of wind shear. A faster spin creates a funnel cloud that can touch down and form a tornado.


http://www.eo.ucar.edu/kids/dangerwx/tornado3.htm

Hurricanes

Hurricanes form from high-pressured air pushing into low-pressure areas, becoming warm and moist, rising and spinning, and cools into large spinning clouds that are hurricanes.


http://spaceplace.nasa.gov/hurricanes/en/

Thunderstorms

Thunderstorms form from the sun heating the Earth's surface, causing warm air to rise and cool air to sink. The rising air cools and forms a cloud that freezes high in the atmosphere, and as the ice particles collide, they bounce off each other and grab an electric charge, creating lightning.


http://www.nssl.noaa.gov/education/svrwx101/thunderstorms/

Wind

Wind forms from the uneven heating of Earth's surface from the sun, which causes the warmer air to spread to places with cooler air. When the warm air travels, it causes wind.


https://en.wikipedia.org/wiki/Wind

Snow

Snow forms from when temperatures are low and there is moisture, in the form of tiny ice crystals, in the atmosphere


http://www.metoffice.gov.uk/learning/snow/how-is-snow-formed

Fog

Fog forms from when the relative humidity approaches 100 percent, water vapor condenses on tiny particles suspended in the air to form a suspension of small water drops


http://whyfiles.org/2010/how-does-fog-form/

Hail

Hail forms from when thunderstorm updrafts are strong enough to carry water droplets well above the freezing level


http://pmm.nasa.gov/education/content/how-does-hail-form

Sandstorms

Sandstorms form from strong winds blowing over loose soil or sand, and picking up so much of that material that visibility is greatly reduced.


http://www.weatherquestions.com/What_causes_sandstorms.htm

Sleet

Sleet forms from snow falling through the warm air, and partially melting into raindrops. Then, the melted snow falls through the cold layer of air below it, and re-freezes.


http://education.nationalgeographic.com/encyclopedia/sleet/

Clouds

Clouds form from warm air rising, expanding, and cooling. Some of the water vapor into tiny droplets on particles of dust in the air. When they come together, they form a cloud.


http://www.weatherwizkids.com/weather-clouds.htm