Southeastern North Dakota Squall Line

July 10, 2011

I targeted eastern North Dakota for my chase today. The forcing looked rather strong for storms to develop, but it was a bit too strong for discrete storms. The storms quickly merged and became an MCS (mesoscale convective system). They accelerated to the east and were soon moving as fast as I could drive. When my road options no longer allowed me to keep this speed, the storms overtook me, and I had to wait for the squall line to pass.


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The first storm southwest of Lisbon. This cell is tornado-warned, but contrast is poor. You can barely make out a wall cloud.


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Looking west from near Stirum, SD. The storms approaching me are in a line, and I am looking into a notch in the line.


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Looking south-southwest at the bowing portion of the line. Estimated 120 mph winds are occurring in there.


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Lack of road options and fast-moving storms to my north, south, and west soon rendered me cored.


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This is what the core (see radar image above) looks like.


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After the storm passed, this view was one that is becoming typical of eastern North Dakota-- lots of water.


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Trees were knocked over in one of the farmsteads.


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Near Detroit Lakes, MN looking at the back side of the line.


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Ottertail River just east of Detroit Lakes. I did not use HDR here. I manually combined two images at different exposures in order to bring out the sky and the ground at the same time.


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Unaltered image of the sunset over Height of Land Lake.


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