Severe Storms Hit Area, More Wet Days Ahead

***Watch WISN 12 News for the latest weather information!***

Thank you for stopping by the Weather Watch 12 blog!  Severe storms containing hurricane force winds hit parts of the area on Tuesday.  The National Weather Service estimated that winds in western parts of Waukesha county were in the neighborhood of 100+mph!

The winds knocked down trees and powerlines in Summit, Chenequa, and in the Town of Merton.  This picture was posted to the U-Local section of by ‘sgeipel’ of a tree knocked down in Hartland on Lillian Drive. 

Lillian Drive Hartland

The severe storm continued northeast and had a nice looking shelf cloud on the leading edge.  This picture by ‘Hunter1960_1’ was posted on the U-Local section of 

West Bend Shelf Cloud June 21

If you have a picture, please post it to the U-Local section or our new Facebook page!  Just click here to ‘like’ our Facebook page. 

The storms reports from our area were centered around Waukesha county.  Most of the reports were for strong straight-line winds.

Storm Reports June 21

The threat for severe weather will continue Tuesday evening, and then more general showers and thunderstorms are expected through Wednesday.  With the storm system wrapping up with cooler rain showers on Thursday.

Watch 12 News for the latest on the severe weather threat, and for live reports from areas hardest hit by Tuesday’s storms.

Jeremy Nelson


6 Responses

  1. 2¼” of rain so far in Big Bend – MORE to come!

  2. Rainfall/storm report: 0.65 inches as of 10pm. No ‘severe weather’ to report.

    Tony (Pl. Prairie)

    • Thanks for the report Tony!


      • Jeremy,

        Reported info can be taken as final for this event.
        Note: Irad was very useful to me for keeping track of severe weather headed my way from northeast/central Ill. Thanks!

        Tony (Pl. Prairie)

  3. Jeremy —

    We received 1/2 inch of rain on Tuesday — that was from one thunder shower w/lightning — no wind — that came through right about the time you were doing the 10 p.m. show. It was still raining around 11 p.m.. It was really strange that even though the radar showed our entire county was getting rain, there was actually none coming down here where I live. Any thoughts as to why?

    Also, the tornado sirens sounded at 3:15 p.m. on Tuesday all over the county, but the warning was only for a “sliver” of the county hear Waupun for a storm that was moving north of there. We’re at least 25 miles south of that area. Why did the sirens go off for the whole county?

    Don — Reeseville

    • Don – every county/city/town has slightly different parameters, but most are consistent with sounding sirens when the NWS issues a warning in a given county. It is based on the EAS [Emergency Alert System] which is county based. This is the same system that most weather radios operate off of. The NWS has improved it’s technology now to produce storm based polygons that warn for the specific areas in the path of the severe storm, but EAS has not been updated for this new technology. Many sirens are based off the EAS signals or policies are such to follow them. Like I said, each area may be slightly different. There are many applications available from the private sector that utilize the new technology – but the EAS is a legacy system and likely would require additional funding to update – which may or may not be in the cards.


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