National Weather Service United States Department of Commerce

Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Automatically generated image showing areas of 0-6km vertical shear.

 

Thumbnail of an automatically generated image showing areas of 0-6km vertical shear. Thumbnail of an automatically generated image showing areas of 0-6km vertical shear. Thumbnail of an automatically generated image showing areas of 0-6km vertical shear.
Hour - 1 Hour - 2 Hour -3

4 Panel Display | Animated Loop

Shear (0-6Km) 

The 0-6 km shear vector.  Values generally greater than 40 knots are supportive of supercells, although in high instability environments this can be as low as 30 knots. 

Back to Convective Parameters Home