According to the National Weather Service, the tornado developed near Pico Rivera between 3 a.m. and 4 a.m. Thursday.

A tornado touched down during the late afternoon of Monday, Feb. 24, in open country southeast of Watertown, S.D. This is the ...

All tornadoes are spawned from a parent supercell ... helps the thunderstorm develop its most essential component: the mesocyclone. A mesocyclone (or "meso" for short) is formed when a ...

The most destructive and deadly tornadoes occur from supercells, which are rotating thunderstorms with a well-defined radar circulation called a mesocyclone. Supercells can also produce damaging ...

A supercell is a thunderstorm that is characterized by the presence of a mesocyclone ... also classified as severe thunderstorms, and tornadoes most commonly form from these kinds of storms.

The United States experiences over 1,000 tornado’s per year; causing an average of $5 ... supercells – rotating thunderstorms with a well-defined circulation called a mesocyclone. Collection and ...

For instance, if radar detects a strong mesocyclone but low-level atmospheric conditions—such as wind patterns and stability—do not support tornado formation, a forecaster may opt to issue only a ...

Land spout tornadoes are usually small, brief and relatively non-violent because they are not associated with the powerful updraft of the mesocyclone of a well-developed, severe thunderstorm.