BISMARCK, ND (KFYR) – Multiple rounds of severe weather moved through parts of North Dakota Sunday and Monday causing damage and some incredible viewer photos.
First, on Sunday evening and into the night storms moved into the Peace Garden State from Montana and South Dakota. The Bismarck-Mandan area was one of the hardest hit parts of the state as about 1.5 ″ of rain fell in a very short period of time, which led to flash flooding. Additionally, wind gusts over 60 mph caused scattered tree damage across the region. Hail up to penny size was also reported on the north side of Bismarck. The Mandan Regional Airport recorded a gust of 75 mph as the storm moved through around 1 am Monday. By 1:15 am, over 1,500 customers were reported without power by MDU, especially in Mandan.
On Sunday evening and into the night, this strong, discrete thunderstorm, called a supercell, tracked all the way from northeast Wyoming (where a tornado was observed) through northwest South Dakota and into North Dakota, before ending up in the Bismarck area. You can see how the storm reports follow this line from the southwest to the northeast producing hail and damaging wind. Golf ball size hail was reported near the Heart Butte Dam in Grant County Sunday night.
Sunday night was the crazy clouds that they produced. This photo was taken Steele around 10 pm of clouds that look like lenticulars due to their smooth texture and layered appearance (like stacked pancakes). However, it is forced to rise over a stationary terrain feature, like a mountain range. If there is enough moisture in the air, the rising motion will cause water vapor to condense downwind of the mountains. However, with no nearby mountains, in this case the clouds are actually formed due to the influence of nearby thunderstorms. A thunderstorm near Steele at this time produced outflow, which is basically cool rushing out in the front of the storm. As the air has moved away from the storm, it has been forced to rise and where it was. The rising and sinking motion in the atmosphere at this time sculpted the clouds and gave them their smooth texture.
There was also an incredible display of mammatus clouds near thunderstorms on Sunday night, which are pouch-like clouds that hang from the underside of thunderstorm clouds as cool on sinks. This was also near sunset, adding another cool aspect to the view!
Then, on Monday a severe thunderstorm moved through the city of Dickinson producing copious amounts of hail, that was, fortunately, no larger than a pea to nickel size. However, there was a lot of it – enough to close some streets and strand some cars. Strong winds were also observed with severe thunderstorms recorded at 63 mph wind gust. Flooding was also a problem for the Queen City, as over 1.25 ″ as in parts of the area. We received an incredible amount of great SkySpy Photos from this storm, so check them all out at SkySpyPhotos.com.
Finally, severe thunderstorms also moved through the James River Valley and surrounding areas on both Sunday evening and Monday afternoon producing damaging wind and hail.
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