Thunderstorms form when ground temperatures are high, typically during late afternoons and early evenings in the summer.
The formation of a thunderstorm can be broken down into three stages:
The Fujita scale measures the intensity of tornadoes based on wind speed and damage.
A cyclone is any rotating low-pressure system. Cyclones rotate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
Mid-latitude cyclones form at a polar front where temperature differences are high between two air masses.
Nor’easters are mid-latitude cyclones in the Mid-Atlantic and New England states.
Hurricanes are special types of cyclones that form in the tropics. They are also referred to as tropical cyclones.
Hurricanes arise in the tropical latitudes in summer and autumn when sea surface temperatures are over 28ºC.
Hurricanes are categorized based on wind speed on the Saffir-Simpson Scale
Blizzards are large snowstorms with high winds.
Lake effect snow occurs when an air mass reaches the leeward side of a lake. The air mass is very unstable and drops a tremendous amount of snow.