Snowy, Very Cold and Windy from the Northern Plains to Great Lakes; Critical Fire Weather in South Texas

Moderate to heavy lake effect snow is expected downwind of the Great Lakes, with the Chicago metro potentially receiving 6 to 12 inches of snowfall. A frigid airmass will bring very cold temperatures to the Central U.S. and Mississippi Valley today, migrating into the Eastern U.S. on Monday. Dry and windy weather will bring critical fire weather conditions to South Texas today. Read More >

Automatically generated image showing areas of surface-1km vertical shear.


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Shear (0-1km)

Surface-1-km Vertical Shear is the difference between the surface wind and the wind at 1-km above ground level. These data are plotted as vectors with shear magnitudes contoured. 0-1-km shear magnitudes greater than 15-20 knots tend to favor supercell tornadoes.

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Snowy, Very Cold and Windy from the Northern Plains to Great Lakes; Critical Fire Weather in South Texas

Convective Parameters Shear - 0-1km