The threat for severe weather is expected to span across all of the Plains into the start of the week, bringing along the threat for damaging wind gusts, large hail and flooding downpours.
"These thunderstorms will pose a hail, damaging wind and isolated tornado risk as they first ignite later Sunday afternoon. Damaging winds will become the primary threat overnight," AccuWeather Meteorologist Brett Rathbun explained.
The primary threat for severe weather will set up across the northern Plains at the end of the weekend.
A potent wave of energy will track out of Canada into the northern Plains, providing the support needed for feisty thunderstorm development.
Areas at risk include Bismarck and Fargo, North Dakota; as well as Rapid City, Aberdeen and Sioux Falls, South Dakota.
"Travel along interstates 29, 90 and 94 could become difficult during the afternoon and evening hours." Rathbun added.
At 4 p.m. CDT on Sunday, McClusky, North Dakota, received golf ball, and in some instances baseball, sized hail, according to the National Weather Service's Storm Prediction Center reports.
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These storms are expected to continue right into the overnight hours as they track eastward across the Plains.
As a reminder, when thunder roars, go indoors. Aside from large hail and damaging wind, these thunderstorms will be capable of producing deadly lightning strikes.
Thunderstorm complexes at night can also be especially dangerous. Some of these storms will be capable of producing rainfall rates in excess on 2 inches per hour, which can quickly lead to localized flash flooding. If you happen to see high water over area roadways, especially at night, remember to turn around, don't drown.
Thunderstorms should become sub-severe by early Monday morning as they approach the Minneapolis metro area. However, they can lead to a damp and slow morning commute and perhaps airline delays.
The threat for severe weather on Monday will shift into the Midwest and portions of the southern Plains. Cities at risk for severe weather will extend from Madison, Wisconsin, southwestward to Oklahoma City.
The severe weather threats into Monday follow a violent and deadly start to the weekend.
On Saturday morning, a flood-related fatality was reported in Fort Smith, Arkansas, according to local emergency management. Later in the day, 15 homes and a dormitory on the University of Arkansas Fort Smith campus were flooded. The city received a little over 4 inches of rain on Saturday, on top of 1.29 inches on Aug. 23 and 3.74 inches on Aug. 22.
Later in the day, a brief tornado was reported in Barton County, Kansas. Damaging winds, flooding downpours and large hail were also reported across the state.
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