The t-storm warned cell passed just to the north of my house at 5:45pm located in the northern part of buffalo grove, IL in Southern Lake County. It looked as if a shelf cloud tried to form for a minute or two. You could a bit of turquoise/light green right above the cloud base as it headed eastward towards Lake Michigan.
almost a greenish color above the cloud base
weak shelf cloud dissipating to the NW
more defined shelf cloud
taken from my backyard, good outflow of 50-60mph winds
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