Instability creates rapid storm development, moisture drives updraft speed, and wind shear generates mesocyclone rotation. Stronger updraft speeds in the supercell create larger hailstones.

Dramatic time-lapse footage of supercell tornado touchdown What is visible on the ground as a tornado is actually a "very small extension" of the larger rotation within these thunderstorms.

This rotation is key to the supercell’s structure and strength. Here’s how it forms: Wind Shear – Supercells need strong wind shear, or a change in wind speed and direction with height.

This rotation is key to the supercell’s structure and strength. Here’s how it forms: Wind Shear – Supercells need strong wind shear, or a change in wind speed and direction with height.

The same rotation responsible for the supercell’s structure and the creation of giant hail also plays into the formation of intense tornadoes. A hook echo on radar is bad news for communities in ...

What makes a supercell unique from all other thunderstorm types is that it contains a deep and persistent rotating updraft called a ... "There are many ideas about how this rotation begins.

That rotation then gets pulled up into the cloud, forming a landspout. They do not form from a supercell thunderstorm. Eastern Colorado is one of a few places in the country to see a lot of ...

Airmass thunderstorms are more like popcorn storms bubbling up and down vs. supercell storms which are big, powerful, and long-lasting. Skip Navigation. ... Rotation: Weak or non-existent. Threats ...