National Weather Service United States Department of Commerce

Heat and Fire Weather Concerns for the Center of the Nation; Coastal Impacts Across the East

Excessive heat returns for portions of the Plains today where heat indices will likely climb above the century mark. Furthermore, warm temperatures, strong winds and dry fuels may result in rapid spread of wild fires across the western High Plains today. For the east coast, lingering storm with onshore flow will bring high surf, dangerous rip currents and coastal flooding, especially at high tide. Read More >

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

 

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

4 Panel Display | Animated Loop

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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