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.
