Monday, June 16, 2014

Widespread Damaging Wind Event Likely Monday into Tuesday

Severe thunderstorms capable of potentially widespread damaging wind...very large hail and tornadoes...a couple of which could be significant...will occur today into tonight from parts of southeast South Dakota and central and eastern Nebraska eastward across much of Iowa...southern Minnesota...into Wisconsin.

A trough over the western United States will intensify during the day one period in response to the equatorward progression of mid and upper-level jet streaks from the far northern pacific into the trough base over the great basin. Downstream from these developments...morning water vapor imagery indicates a low-amplitude short-wave trough progressing into the northern and central plains with this feature continuing eastward development into the upper great lakes by late tonight/early Tuesday.