Monday, July 18, 2016

Storms possible Wednesday before Heat Arrives.

Storms Sunday night and Monday pushed just south of the area, after our atmosphere was already tapped out from storms that came through Sunday morning. Monday afternoon as well as Tuesday will end up being dry overall, minus an isolated shower or storm that develops along the Mississippi River Valley area. However, our storm threat increases by the middle of the week.

A low pressure system will develop out of the Rockies and then move into the northern plains, with its warm front draped through South Dakota, Nebraska, and western Iowa Tuesday. This will be the focal point for storms Tuesday but the front will then lift northeast Wednesday. With the warm frontal boundary situated in Minnesota, Iowa, and central Illinois storms will be possible for northern Illinois and southern Wisconsin in the morning and possibly afternoon.

As the forecast stands now, a decaying MCS (mesoscale convective system) or large complex of storms will move in from the west, with potentially strong wind gusts. A couple days out the details are a bit murky on timing and if these storms will hold together, but either way prepare for a little rain on Wednesday.

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