Fog On Satellite & The Weekend Ahead

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

***9PM UPDATE****

Dense Fog Advisory for Lakeshore counties until 10am. Some visibilities under 1/4 mile. May be a little delayed for morning commute and make sure you call ahead if you have a flight tomorrow morning.

Thank you for stopping by the Weather Watch 12 blog.  Thursday started off foggy across southeast Wisconsin.  Visibilities were under a quarter mile in spots.  Fog is essentially a stratus cloud on the ground.

The low clouds and fog showed up very well on the visible satellite Thursday morning.  Below is the visisble satellite from 8am Thursday, the white represents the clouds and fog.  Any dark color is land or water.

Fog Thursday April 7

Using visible satellite imagery can show many things from fog and clouds, to snow on the ground in winter.  But remember, the visible uses the light from the sun, so when its dark an infrared satellite must be used.

By the weekend the focus will shift to a big warm-up and also a chance of showers and t-storms.  Sunday still looks like the warmest day of the weekend, with highs around or above 80 possible in our area.

If winds turn southwest and sunshine is around, even in Milwaukee highs could get that warm.

 This is the fourth time this part of the weather pattern has occurred in our cycling weather pattern.  As the cold front slides east, and the surface low moves into the Great Lakes, the forecast surface map for Monday is shown below.

Surface Map April 11

This part of the pattern has occurred before.  All between 47-52 days apart.  Back on November 14 low pressure moved into the Great Lakes as a cold front had just pushed through Wisconsin.

Surface Map November 14

48 days later, the set-up was the same.  Low pressure moved into the Great Lakes, and a strong cold front dropped temperatures to ring in 2011.

Surface Map January 1

This storm system has brought with it a big warm-up, a strong cold front, and precipitation each time through the pattern.  As the storm arrives this weekend there will be two main chances for showers and thunderstorms.  The timing looks to be Saturday night, and then late Sunday or Sunday night.

Depending when any possible storms clear Sunday morning, and when winds pick up out of the southwest will determine how quickly temperatures warm.

The latest data points to highs around 80 on Sunday.  Below is the 12Z NAM temperature forecast.

NAM Temperatures Sunday

It appears that we are going to jump right into summer for a day or two!  For updates on the weekend and the timing of thunderstorms and possible severe weather, please watch WISN 12 News.

Let us know what you think in the comments section of the blog!

Have a great day!

Jeremy Nelson


11 Responses

  1. Thanks for the update Jeremy. Wondering what the SPC will say tomorrow morning about the Sunday event.

    • Gregg,

      I would think Saturday night would be more hail/wind with a possible MCS. As the cold front and low approach late Sunday or Sunday night a tornado threat will likely exist somewhere in the Midwest. A lot will depend on timing, temps, instability, etc. Lots to think about over the next few days.


  2. What are we looking at rain wise this weekend? The last bit of the puddles in my backyard from last weekend just went away this afternoon. I know everyone loves these storms but when your sump pump is running every 2 minutes any rain keeps the entire family awake and creates scares with power going out.

    • Craig,

      Unless we set up an east/west line, which I do not expect, the rain will move through pretty quickly. Maybe an inch or so.


  3. The fog surprised me as I traveled to Adell, WI yesterday morning. Around my house in Oshkosh fog was not noticed but as soon I got closer to Fond du Lac it started to show up. Once I got up on the Niagara Escarpment it continued to be foggy the entire way to Adell. Fun stuff!

  4. 04-08-2011
    Rainfall report: 0.75 inches as of 10:30am

    Tony (Pl. Prairie)

  5. Mark & Jeremy,

    After posting my rainfall report, I checked what the local airport was reporting. Even though our locations are only about 3 ½ miles apart, I’m fairly certain the differences in the totals reflect actual variation between the locations. Just wanted you to know in case my ‘unofficial’ number seemed suspect.

    Tony (Pl. Prairie)

    • Tony,

      Thanks for sharing the rainfall totals. You should see more this weekend.


      • Jeremy,

        Emptied my rain gauge. Should be all set for the weekend provided the rain falls mostly vertically rather than horizontally. We’ll see!

        Tony (Pl. Prairie)

  6. Could you give me a temp. Forecast for Sheboygan? The NWS forecasts are holding us back in the mid 60s

    • Robert,

      I think even Sheboygan will be in the 70s on Sunday.


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