Wet Weekend Ahead…Forecast Rain Totals

***Watch WISN 12 News at 5, 6, & 10pm as we track rain on the Doppler 12 Radar Network!***

After 10 consecutive dry days, some much needed rain is on the way!  Thank you for stopping by the Weather Watch 12 blog.  In today’s entry we will discuss the timing and amount of rain that is expected this weekend. 

If you want to track the rain, check out our interactive radar.  Give the radar a try, I love it!


So far in April, Milwaukee has picked up 2.05″ of rain, that is 0.87″ below average as of Friday afternoon.  That isn’t a huge deficit, but considering the deficit for 2010 stands at 4.84″, the weekend washout isn’t all bad news.

A very large storm system is currently in the nation’s mid-section.  This storm has a couple areas of low pressure and surface boundaries.  The first piece of the storm arrives Friday evening/night and lingers into Saturday.  The second much stronger part of the storm will move our way Saturday Night.  This is when heavy rain could drench southern Wisconsin.  Right now it just looks like heavy rain, and no severe weather.  The severe weather should stay out of Southeast Wisconsin, but thunderstorms are still possible.  If any locations in southern Wisconsin see severe weather, it would likely be in south central or southwest areas.  The main threat would be marginally severe hail.

Below is the Severe Weather Outlook for Saturday.  This forecast is issued by the Storm Prediction Center.  Notice the moderate risk area, this is where the greatest threat for tornadoes will be.

The main energy with this storm system will surge north late Saturday and Saturday Night.  Below is a surface map showing the main surface low and its position by Sunday morning.

A period of heavy rain will likely occur very early Sunday between Midnight and 6 a.m.  This is when 1″ or more of rain is expected.  The rain total for the entire storm could top 2″ in spots.

Below is a rainfall forecast from our in-house computer model.  This is just ONE of many computer models we use to make our forecasts.  Use this as guidance…as I will show our ‘official’ rainfall forecast on WISN 12 News.  Not out of the question that rain totals may near 3″ in spots.


With the wet weather expected this weekend, please share your rain totals with us in the comments section of the blog, or on Facebook at WeatherWatch 12  I will be using viewer rain totals on WISN 12 News all weekend long!

Look for more blog updates all weekend long!

Jeremy Nelson


2 Responses

  1. We had a period of moderate to heavy rain this morning in Sheboygan. Rain totals are up to 0.43 in. so far as of 10 AM.

    • Robert,

      Thanks for the update! Keep the totals coming.


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