Monday, June 12, 2017

Severe Thunderstorm Watch

8:15pm Update: Most storm activity over southern Wisconsin and northern Illinois will fall below severe limits and bring some much needed rainfall for only a select few.  Of bigger note will be the breeze and much cooler temperature associated with an outflow boundary from thunderstorms over Wisconsin.  This outflow boundary has caused winds to gust as high as 40 mph near Janesville and has dropped temperatures into the 70's and even 60's in Monroe! 

Southern edge of stronger thunderstorms moving through central Wisconsin will move through northern Green County - north of Monroe.  These storms could produce wind gusts in excess of 40 mph.

A Severe Thunderstorm Watch has been issued for Green, Rock and Walworth counties until Midnight.

An intense cluster of thunderstorms has been moving east/southeast out of Minnesota and into west-central Wisconsin Monday afternoon.  This is right along a stationary boundary that has remained north of a line from Madison to Milwaukee.

Thunderstorms capable of producing strong to severe wind gusts - over 60 mph - are likely over central Wisconsin.  The southern edge of these storms are likely to dip south of Madison near Monroe and Janesville closer to 8pm/9pm this evening.  Be sure to keep a watchful eye to sky as thunderstorms could pack quite a bunch over the dairy state.

It is possible that we may see a few of these sneak as far south as Highway 20 after 9pm.  This would affect the counties of Jo Daviess, Stephenson, Winnebago, Boone and McHenry.

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