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Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Overview

A line of thunderstorms moved east out of Colorado into southwest Nebraska Tuesday evening, May 16th. A supercell was embedded within the line which produced a brief weak tornado just west of Grant. No damage occurred from this tornado.

This was not an "ideal" set-up for tornadoes but this area between Imperial and Ogallala was identified as an area where there might be some potential because an old outflow boundary set up in western Perkins County. So when a severe thunderstorm moved across this boundary, the low level shear was briefly enhanced enough to spawn a tornado. Luckily, a retired NWS Employee and prolific researcher was in the area to document the event because we do not have much radar coverage in that part of our forecast area. Check out the Radar tab for more information on Radar and its limitations in this case. 

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