After record warmth on Thursday, storms are expected to flare up across parts of Nebraska and Iowa, from Friday into the weekend.

Forecasters are advising people, especially those with outdoor plans, to pay attention to changing conditions.

Of special concern is Friday night, when there’s an unusual risk of nighttime severe weather.

“It’s definitely something to keep an eye on,” said Alan Reppert, meteorologist with AccuWeather Inc., The World-Herald’s private weather consultant.

These springtime storms function differently from those of midsummer, he said. Most people in the Great Plains are used to storms dying out with nightfall as temperatures drop. But these storms have a different dynamic, so they could continue to spark and cause problems through Friday night.

The area at greatest risk of violent storms on Friday is central Nebraska.

Scattered, powerful supercells are possible, with damaging hail, strong winds, heavy rains and possibly a few tornadoes.

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On Thursday, Omaha set a record high for the date, with the temperature peaking at 95 degrees.

The previous record for May 16 was 93, set in 1944 and 1939.

Another warm day is on tap Friday with highs approaching 90 in Omaha, but the cold front that has been the spark for these storms is dropping south.

As a result, temperatures will fall.

Late in the weekend into next week, daytime highs are forecast to drop back into the 60s, with overnight lows in the 50s and even the 40s.

Nancy Gaarder helps cover public safety and weather events as an editor on The World-Herald's breaking news desk. Follow her on Twitter @gaarder. Phone: 402-444-1102.

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