Thunder and lightning are much more common in warm-season storms because of convection, the upward motion of air that helps produce thunderstorms. It's fairly rare to have convection within a ...

It appears as if the convection center of circulation was blown apart -- which is exactly what the wind shear had done to those high thunderstorm tops.

PHOENIX (AZFamily) — A zonal flow of the jet stream has set up in the west. Generally, that means the jet is running west to ...