The Latest on storm damage in the Southern Plains and Midwest (all times local):

8:40 a.m.

Authorities say one person has been killed and another injured by what may have been a tornado that damaged a farmstead in southwest Iowa’s Adair County.

Tony Brinker, a volunteer with the Augusta Fire Protection District, cuts trees that were blocking Highway 94, Tuesday, May 21, 2019, near Augusta, Mo. A long north-south line of storms hit the St. Louis area Tuesday evening. The storms are part of a weather system moving across the Midwest that began last weekend and will continue through the week, according to the National Weather Service. (David Carson/St. Louis Post-Dispatch via AP)
Tony Brinker, a volunteer with the Augusta Fire Protection District, cuts trees that were blocking Highway 94, Tuesday, May 21, 2019, near Augusta, Mo. A long north-south line of storms hit the St. Louis area Tuesday evening. The storms are part of a weather system moving across the Midwest that began last weekend and will continue through the week, according to the National Weather Service. (David Carson/St. Louis Post-Dispatch via AP)

The Adair County Sheriff’s Office says first responders found the body of 74-year-old Linda Brownlee early Wednesday morning at the farm just east-southeast of Adair. Seventy-eight-year-old Harold Brownlee was flown to a Des Moines hospital.

Robert Kempf, emergency management coordinator for Adair and Guthrie counties, says the Brownlee home sits atop a hill, so the extensive damage could have been caused by straight-line winds. The National Weather Service is sending an assessment team to determine whether a tornado was involved.

Kempf says three outbuildings were destroyed at the farm, and two nearby houses were damaged as well.

Horse Thief Lake off US Highway 224 sits cold and unused in the snow storm on Tuesday, May 21, 2019. The storm has dumped 10 inches (25 centimeters) of snow on the west side of Rapid City. National Weather Service meteorologist and hydrologist Melissa Smith says Rapid City is seeing minor flooding. (Adam Fondren/Black Hills Pioneer via AP)
Horse Thief Lake off US Highway 224 sits cold and unused in the snow storm on Tuesday, May 21, 2019. The storm has dumped 10 inches (25 centimeters) of snow on the west side of Rapid City. National Weather Service meteorologist and hydrologist Melissa Smith says Rapid City is seeing minor flooding. (Adam Fondren/Black Hills Pioneer via AP)

The weather service says debris from the farmstead landed on nearby Interstate 80.

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8:40 p.m.

Flooding in Kingfisher, Okla. is pictured Tuesday, May 21, 2019. Flooding following heavy rains was an issue across the state. (AP Photo/Sue Ogrocki)
Flooding in Kingfisher, Okla. is pictured Tuesday, May 21, 2019. Flooding following heavy rains was an issue across the state. (AP Photo/Sue Ogrocki)

A small town in Oklahoma is urging residents to evacuate as the Arkansas River heads toward near-historic levels.

Forecasters say major flooding is expected in Webbers Falls, a town of about 600 people about 140 miles (225 kilometers) east of Oklahoma City.

According to the National Weather Service, the Arkansas River was at 34.5 feet (10.5 meters), or 6.5 feet (2 meters) above flood stage, as of Wednesday morning. The river was expected to rise to 40 feet (12 meters) by Thursday morning. The National Weather Service says the flooding poses an “extremely dangerous and life-threatening situation.”

Crews begin to replace electric lines across from a tornado damaged home, Tuesday, May 21, 2019, near Mangum, Okla. Dangerous storms left a string of more than 30 tornadoes across the central U.S., damaging homes in Oklahoma, demolishing a racetrack grandstand in Missouri and inundating the region with water over a short period. (AP Photo/Sue Ogrocki)
Crews begin to replace electric lines across from a tornado damaged home, Tuesday, May 21, 2019, near Mangum, Okla. Dangerous storms left a string of more than 30 tornadoes across the central U.S., damaging homes in Oklahoma, demolishing a racetrack grandstand in Missouri and inundating the region with water over a short period. (AP Photo/Sue Ogrocki)

Forecasters say parts of Oklahoma, Missouri and Kansas could see severe weather Wednesday, the latest in a multi-day stretch of storms that have spawned dozens of tornadoes and caused two deaths in Missouri.

A storm front seen from Chesterfield Parkway westbound onramp to Highway 40 (Interstate 64) is seen looking west in to St. Charles County, in Missouri. The storm rolled into the region Tuesday evening. Funnel clouds were reported in St. Charles County, but there were no immediate reports of major damage. (David Carson/St. Louis Post-Dispatch via AP)
A storm front seen from Chesterfield Parkway westbound onramp to Highway 40 (Interstate 64) is seen looking west in to St. Charles County, in Missouri. The storm rolled into the region Tuesday evening. Funnel clouds were reported in St. Charles County, but there were no immediate reports of major damage. (David Carson/St. Louis Post-Dispatch via AP)
A flooded field is pictured from the air, Tuesday, May 21, 2019, near Geary, Okla. Flooding following heavy rains was an issue across the state. (AP Photo/Sue Ogrocki)
A flooded field is pictured from the air, Tuesday, May 21, 2019, near Geary, Okla. Flooding following heavy rains was an issue across the state. (AP Photo/Sue Ogrocki)

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