Thunderstorms

These flashcards cover key concepts related to thunderstorms, their types, characteristics, and associated severe weather.

Single-cell thunderstorm

A type of thunderstorm characterized by one updraft and downdraft, typically short-lived.

Multi-cell thunderstorms

Thunderstorms formed from a group of cells in various stages of development, exhibiting multiple updrafts and downdrafts.

Squall line

A line of thunderstorms commonly associated with cold fronts, characterized by heavy rains and potential tornadoes.

Supercell thunderstorm

A large and long-lasting thunderstorm with a rotating updraft, significant instability, and the potential for severe weather.

Mesocyclone

A rotating updraft within a supercell thunderstorm associated with severe weather, formed from horizontal vorticity tilted by vertical wind shear.

Updraft

A rising air current in a thunderstorm, critical for the storm's development.

Downdraft

A downward-moving air current in a thunderstorm, often associated with precipitation.

Outflow boundary

The boundary that forms when cool air from downdrafts spreads out and can initiate new updrafts.

LCL (Lifted Condensation Level)

The altitude at which condensation begins to occur; important in determining cloud formation.

Severe thunderstorm

A thunderstorm characterized by intense rainfall, hail, and the potential for tornadoes and strong winds.

Severe weather watch

Issued when favorable conditions for severe weather exist, indicating the need for alerts.

Severe weather warning

Issued when severe weather has been reported or detected by radar, requiring immediate action.

Vertical wind shear

The change in wind speed and/or direction with height, which can influence thunderstorm development.