Thunderstorm

Science / Weather / Thunderstorm: Produced by a cumulonimbus cloud, it is a microscale event of relatively short duration characterized by thunder, lightning, gusty surface winds, turbulence, hail, icing, precipitation, moderate to extreme up and downdrafts, and under the most severe conditions, tornadoes.

Nocturnal Thunderstorms

Science / Weather / Nocturnal Thunderstorms: Thunderstorms which develop after sunset. They are often associated with the strengthening of the low level jet and are most common over the Plains states. They also occur over warm water and may be a MORE

Cold Core Thunderstorms

Science / Weather / Cold Core Thunderstorms: Thunderstorms formed primarily due to steep lapse rates, especially when very cold air aloft overlies warmer surface air. MORE

Air Mass Thunderstorm

Science / Weather / Air Mass Thunderstorm: A thunderstorm that is produced by convection within an unstable air mass through an instability mechanism. Such thunderstorms normally occur within a tropical or warm, moist air mass during the summe MORE

Severe Thunderstorm

Science / Weather / Severe Thunderstorm: A thunderstorm with winds measuring 50 knots (58 mph) or greater, 3/4 inch hail or larger, or tornadoes. Severe thunderstorms may also produce torrential rain and frequent lightning. MORE

Supercell

Science / Weather / Supercell: A severe thunderstorm characterized by a rotating, long-lived, intense updraft. Although not very common, they produce a relatively large amount of severe weather, in particular, extremely large hail, MORE

Bow Echo

Science / Weather / Bow Echo: A radar echo signature often associated with severe thunderstorms, especially those that produce wind damage. It is bent outward in a 'bow' shape. MORE

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