The Supercell Composite Parameter (SCP) combines three key ingredients for supercell thunderstorms, which are thunderstorms with rotating updrafts: instability, wind shear, and helicity (the potential ...

Many ingredients are coming together for severe weather in Iowa on Monday. There are a couple of things in question, ...

The Supercell Composite Parameter (SCP) combines three key ingredients for supercell thunderstorms, which are thunderstorms with rotating updrafts: instability, wind shear, and helicity (the ...