Severe Thunderstorms in the Central U.S.; Upper Level Low Over California

Scattered severe thunderstorms are possible today across central and eastern Minnesota, Iowa, and western Wisconsin. A few tornadoes, isolated very large hail, and damaging winds may occur. An upper level low will help trigger scattered thunderstorms over portions of central and southern California today along with a few inches of snow in the central Sierra Nevadas. Read More >

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.

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Severe Thunderstorms in the Central U.S.; Upper Level Low Over California

Convective Parameters Shear - 0-6km