40 Degree Temperature Drop

Nothing like coming back from vacation to severe weather and a crazy temperature drop. Honestly, I don’t think I would want it any other way. Wisconsin in June brings a little bit of everything. After 3 days in a row with record-setting or tying high temperatures of 94, 97, and 93, the temperatures this afternoon hovered right around 50 degrees.

It was my two oldest daughters last day of school today and we all shivered through a picnic lunch. I felt bad for the kids whose parents must not have seen the forecast and their kids were dressed in shorts. The picture below is of my daughter Claire. Notice that she is dressed appropriately. I have made the mistake too many times of not getting my kids in warm enough clothes. This does not go over well when your dad is a meteorologist.


Yesterday was quite a day around the weather center. I was too busy to post a blog so I will try to make up for that today. The cold front meant serious business late yesterday. It was a pretty good setup for severe thunderstorms with all of our low-level moisture and hot temperatures. One main ingredient that was missing was shear. That is why we only had one tornado southwest of Madison. Here is the write-up from the NWS:

The weak tornado, rated EF1, touched down in central Dane county, as verified in a National Weather Service damage survey crew on Thursday, June 9th.  Assistance with the survey was provided by members of the MidWest Severe Storm Tracking/Response Center.  The tornado spun up about 2.5 miles west-southwest of Verona at about 741 pm CDT and continued for about 21 minutes.  It dissipated about 802 pm CDt about 3 miles northeast of McFarland. 

Damage consisted primarily of uprooted trees and broken tree branches which fell on power-lines. In Verona, damaged trees or tree branches crushed a garage, and damaged at least one home and a vehicle.  Scattered power-outages were noted.  Some minor roof shingle damage was seen. The tornado had a maximum width of 100 yards.  The path length was about 17.6 miles. This tornado was rated at the bottom of the EF1 category with wind speeds of about 86 to 90 mph.  Damage along the path was sporadic.

The bigger issue was the cold pool of air that surged in behind the main line of storms and pushed a bow echo across SE Wisconsin. Severe thunderstorm warnings were issued for almost every county. There was a real possibility of hurricane force winds with the bow echo. The radar was showing 70-90 mph winds just aloft the surface as the storms emerged from Dane and Rock counties. We were fortunate that the strongest winds never mixed to the surface. Even without, the strongest winds, there were still plenty of damage reports from Jefferson, Walworth, Racine, and Kenosha counties. There was also sporadic damage around other parts of the area. Here are a few of the images sent to Weather Watch 12.

The above picture is from Dustin and Penelope in Franklin.

Browns Lake had strong winds that damaged a boat and pier. Thanks to Greg for the photo.

The above picture is my favorite. It is from Matt in Milwaukee. He was flying back to Milwaukee from Las Vegas and took the picture of the cumulonimbus clouds as it was just beginning to break the cap.

Our weather will stay rather chilly for the next few days and we have more rain on the way. That will happen again late tonight. Here is the RPM forecast for 6am Friday morning.

Rainfall totals will likely range from .50″ to 1″ across the area. Here is the RPM forecast for accumulated rainfall.

Coming up in tomorrow’s blog, I will focus in on the weekend forecast and talk about the heat burst that parts of the area had on Wednesday. Quite a rare phenomena in our area.









7 Responses

  1. Mark, we are sticklers for having our daughter dressed appropriately. It’s only expected that you would as well. No damage up here in Oshkosh, just an orange mammatus sunset. It was nice. Great choice in photos to share and I am looking forward to your ‘heat burst’ entry.

    I went out on a limb and openly attempted to convince myself that this past heat wave was apart of the LRC and not a figment of my ignorance. I put together a quick blog entry if you are interested in having a read. I am curious to what you and Jeremy think of the past few days and the cycle. http://osnw3lrc.blogspot.com/2011/06/early-june-analysis-heat-wave.html

    I would like to share the mammatus photos as well. http://tiny.cc/060811mam

  2. You know what they say about Wisconsin weather…if you don’t like the weather, just wait a few minutes and it will change. I guess the significant drop in temps is a good example of that.
    Where I live, we were spared from the nasty stuff. Although it was all around us and the sky looked very threatening. We had a little rain, but no wind or hail.
    I look forward to the return of the summer-like weather. Looks like it will be a while before that happens.

    • Thanks, Chris.

      Nothing like going from 97 to a high of 54. Late next week looks promising for a nice warm-up.


  3. Friday, June 10, 2011 10:41 am

    Rainfall report: As of 10:30am, 0.80inches. Note: After reporting an identical amount yesterday morning, I did empty the gauge.

    Tony (Pl. Prairie)

    • Thanks, Tony. That will keep your grass green for awhile.


  4. Josh,
    The three straight days in the 90s this week really surprised me. I did not see that coming with the LRC. I consider this another learning experience. It comes down to the location of the jet and wind direction. Clearly the high to our south won the battle. I enjoyed your blog and the mammatus clouds as well.


    • Mark, thanks for checking out the links! Certainly a learning experience, but something I think may occur quite often after looking back at past years. Fun stuff. It’s always a joy to see mammatus.

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