The National Weather Service said reports of extensive hail damage and flooding had trickled in as storms pushed into Nebraska and moved into neighboring Iowa, where winds of up to 85 mph were recorded. Up to 4 inches of rain was expected in parts of Nebraska and Iowa.
“This is one of these days we can’t let our guard down,” said Bill Bunting, forecast operations chief at the Storm Prediction Center in Norman, Oklahoma. “It’s unfortunately panning out as we thought it would. This is shaping up as a very dangerous evening.”
Officials said the highest risk for severe weather was centered in parts of eastern Nebraska, western and southern Iowa, and northeast Missouri. Officials said there was the potential for a weather event called a derecho, which is a storm of strong straight-line winds spanning at least 240 miles.
Terry Landsvork, an observation program leader for the National Weather Service in Valley, Nebraska, said heavy rain and flooding was reported in the Omaha area.
“The storms, we call it training. It’s like a train going down the track. One car goes by, another one follows. That’s what’s happening,” he said, in reference to eastern Nebraska and western Iowa. “These thunderstorms ... keep moving right over the same areas.”
In the northeast Nebraska cities of Norfolk and Blair, residents reported shattered windows in homes and vehicles after baseball-size hail passed through. At least one severe thunderstorm capable of producing a tornado was reported near the city of Fullerton. Another was reported in the western Iowa community of Elliott.
On Interstate 29 north of Council Bluffs in western Iowa, more than 25 vehicles had their windows shattered by hail, Landsvork said.
“They were driving along Interstate 29, had no place to go, and whether they were driving or pulled over, they just didn’t escape the hail,” he said.
The storms, which are also expected to affect parts of Illinois, Kansas and South Dakota, caused heavy rain in the Omaha area. Police spokesman James Shade said dozens of residents were evacuated from low-lying homes on the northeast side of the city, where several inches of rain fell in an hour.
“It’s just completely flooded these areas, and these homes are now filling up with water in their basement areas, so we’re pulling people out,” he said, noting a 95-year-old woman in a wheelchair who was rescued.
Police also used boats to assist dozens of drivers stranded in floodwaters around the city. Shade said many cars remain stuck on those flooded streets.
The bad weather impacted primary elections taking place in Iowa and South Dakota. Officials in Pottawattamie and Montgomery counties in Iowa, where polls closed at 9 p.m. CDT, reported closing some precincts temporarily due to poor weather.
“It’s nasty here. You can’t imagine,” said Pottawattamie County Auditor Mary Jo Drake. “It’s as black as the ace of spades.”
In South Dakota, where polls closed at 8 p.m. CDT, a morning thunderstorm forced Senate candidate Mike Rounds, who was flying to Rapid City, to land in Pierre.
The severe weather threat arrives amid an unusually quiet late spring, with far fewer documented tornados in May than in many recent years. Bunting said the current system could be most severe because of widespread straight-line winds.
“As we like to say, it doesn’t have to rotate to be dangerous,” he said.
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