6:40 P.M. Update

August 20th, 2014 at 6:44 pm by under Chad's WLFI Weather Blog

A couple isolated t’storms are still possible this evening.

As low-level jet noses into Iowa tonight, it appears an MCS or a complex of showers/storms may organize & move southeastward on the weak surface front laid up across the viewing area.  This would tend to affect us either late tonight &/or tomorrow morning.  Isolated severe gust(s)/hail are possible along with locally-heavy rainfall.

It is not completely certain that this will form & organize well, but conditions support the formation.

Mid-level shortwave is evident & moving toward western Iowa, while low-level jet will strengthen & turn north, then northeast overnight with surface boundary in area with muggy, unstable airmass.

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