National Weather Service United States Department of Commerce

Severe Thunderstorm and Flash Flood Threat in the East; Snow in the Rockies;

The storm system producing severe weather and isolated flash flooding will begin to weaken tonight. As the storm moves east, several chances for severe weather and heavy rain are possible from the Midwest and Ohio Valley to the Southern Plains, Lower Mississippi and Tennessee valley. Heavy snow continue to impact the Northern Rockies. Critical fire weather conditions persist in the Southern Plains 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. 

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