Summer Sizzles To An End


Severe Thunderstorm Watch for Milwaukee, Waukesha, Racine, Kenosha, Jefferson, and Walworth Counties Until 9 pm. Damaging Winds will be greatest threat. Storms arriving in the metro between 5 and 7 pm. Stay with Weather Watch 12 and Interactive radar on for the latest.

***Watch WISN 12 News for live radar updates!***

Thank you for stopping by the Weather Watch 12 Blog!  The official start of Fall is just hours away, but the last full day of Summer will feel more like mid-July!

Fall officially begins on Wednesday at 10:09 p.m.  Before we get there, a wild swing of weather is in store for the next 24 hours! 

As of this writing(Tuesday morning), a cold front was located from the western tip of the U.P. of Michigan back through western Wisconsin and into the Plains.  Ahead of the front winds were out of the southwest, temperatures were in the 70s, and dew points in the muggy 60s.

Below is the surface map from 7:33 a.m. Tuesday morning.  Just click to enlarge.

High temperatures today will soar well into the 80s.  The record high for September 21 in Milwaukee is 90 degrees set in 1893 and tied in 1920.  While I think we fall short of a record(I went 85), it will be a very warm end to summer.

The cold front will continue to slide east throughout the day, and by afternoon it will reach our viewing area.  With the front arriving during peak heating, increasing low level moisture(dew points), and lift courtesy of the front, thunderstorms are likely.

The 3 ingredients needed for severe weather are moisture, lift, and instability.  All of those ingredients should be in place today for a chance of strong to severe storms.  Below is the severe weather outlook from the Storm Prediction Center.  It has southern Wisconsin in the slight risk area.

Within that slight risk area the threat is further broken down into the probabilities for tornadoes, hail, and wind.  The biggest threat for today is damaging winds.  Below is the probability breakdown for wind.  The 30% area over far southeast Wisconsin means that there is a 30% chance of damaging winds within 25 miles of a point. 

Along with the threat for damaging winds, there could also be hail.  And as we have seen many times this summer season, a brief and isolated tornado can never be ruled out.  Anytime day or night you can track severe weather with our interactive radar.  Just click on the link below.  Give it a try!

The threat for severe weather will be highest in the afternoon and evening hours.  If severe weather develops make sure to watch WISN 12, as we are always on Weather Watch!  You can also stayed up-to-date throughout the day here:

  • Facebook – WeatherWatch 12
  • Twitter – WISN12News
  • iPhone App – WISN12
  •  – Interactive Radar & Futurecast

Have a great day and make sure to send us your storm related photos or post them to the U-Local section of!

Jeremy Nelson


2 Responses

  1. What takes sooooo long to update the pollen report? I am an allergy sufferer and I NEED the info? Please fix this.

  2. Jeremy, doesn’t look like we’re going to get much sizzle up here in northern Dodge County today. We’ve had cloud cover most of the day keeping those predicted highs in the 80’s a lot lower. Hope that reduces chances of severe storms for our area tonight.

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