Definition of Popcorn convection

WEATHER&METEOROLOGY
Popcorn Convection
[Slang], Showers and thunderstorms that form on a scattered basis with little or no apparent organization, usually during the afternoon in response to diurnal heating. Individual thunderstorms typically are of the type sometimes referred to as air-mass thunderstorms: they are small, short-lived, very rarely severe, and they almost always dissipate near or just after sunset.

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Popcorn convection definition was found in categories: Science & Technology(1)  

Popcorn convection Definition from Science & Technology Dictionaries & Glossaries

A COMPREHENSIVE GLOSSARY OF WEATHER
Popcorn Convection
[Slang], Showers and thunderstorms that form on a scattered basis with little or no apparent organization, usually during the afternoon in response to diurnal heating. Individual thunderstorms typically are of the type sometimes referred to as air-mass thunderstorms : they are small, short-lived, very rarely severe, and they almost always dissipate near or just after sunset.