Severe weather to threaten millions in the Upper Midwest on Tuesday
Severe storms already took aim at the Dakotas on Monday, and more severe weather is expected through Tuesday.
After severe thunderstorms produced damaging winds, large hail and even a tornado across the western Dakotas on Monday, a similar area will be at risk into Tuesday night. However, the threat will also extend farther to the east.
The combination of a cold front and a disturbance at the level of the atmosphere where jets fly will move eastward and trigger the risk for severe weather for more than 25 million people over parts of the northern and central Plains, as well as part of the Upper MIdwest.
Cities such as Fargo, North Dakota; Omaha, Nebraska, and Sioux Falls, South Dakota, are in the zone where severe weather may strike. Places like Dickinson and Minot, North Dakota, that were hit hard on Monday may experience rough weather again into Tuesday night.
This threat will extend into southeastern Saskatchewan and southern Manitoba in Canada as well.
"Parts of southwest Manitoba that have already seen quite a bit of rainfall this past week will once again be under the gun for flash flooding this afternoon into the evening hours," said Storm Warning Meteorologist Michael Youman.
Meteorologists are monitoring the risk for flash flooding, large hail and damaging winds. While the risk is low, there is also a nonzero risk for a tornado.
"Even a tornado or two couldn't be ruled out as these storms initially develop in central parts of the Dakotas," Youman mentioned.
"During the evening and early overnight hours, multiple lines of thunderstorms will move across the northern and central Plains and as far south as northeast Kansas and northwest Missouri, with high wind gusts up to 80 mph and localized areas of flash flooding expected across these areas," Youman continued.
While storms in portions of the middle Mississippi, lower Ohio and Tennessee valleys, as well as the southern Appalachians and part of the Atlantic coast are unlikely to produce any organized severe weather, isolated instances of damaging winds could occur. In addition, with ample moisture in place in many locations, any thunderstorms can produce very heavy rain and cause localized flooding.
The risk of downpours will be enhanced slightly in the Northeast as a stationary storm system increases thunderstorm coverage a bit.
As the jet stream disturbance from the northern Plains comes into northern portions of the Upper Midwest on Wednesday, parts of Minnesota will be at risk for thunderstorms. Even though severe weather will be less of a risk than on Tuesday, the storms could still have some hail and strong wind gusts. Elsewhere in the region, the main hazard with any storms will primarily be heavy rain.
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