KANSAS CITY, Mo. (AP) — The National Weather Service has issued an excessive heat warning for parts of Kansas, Missouri, Iowa and Illinois.

Temperatures reached into the upper 90s in some areas Monday, with heat indices of up to 116 degrees because of high humidity.

Strong storms are also forecast for parts of the Midwest and Ohio Valley.

Forecasters say there could be a strong tornado or two, along with large hail, as storms begin to form later Monday in eastern Iowa and northwestern and central Illinois.

In Cincinnati, the Major League Baseball Home Run Derby is under the threat of being washed out by mother nature because of heavy rain.

Illinois and Indiana also had a squall line go through, with more rain expected later.

COLUMBUS, Neb. (AP) — A new medical invention that’s helping shoulder surgery patients has roots in Nebraska, thanks to an orthopedic surgeon from Columbus.

Dr. Edward Fehringer wanted to have a device that was small, simple to implant and able to preserve bone better than the options already on the market.

He and a team of other surgeons and engineers came up with a shoulder replacement prosthesis called the Tornier Simpliciti Shoulder System. It has been used in around 100 patients nationwide.

The titanium device is different from other devices mainly because of its shorter stem, or the part that’s inserted into the bone of the upper arm during shoulder replacement surgery. The stem is only 2 centimeters.

LINCOLN, Neb. (AP) — Officials at the Lincoln Airport say passenger traffic is on pace to increase for the third consecutive year.

Airport officials announced Monday that passenger numbers on commercial airlines were up 15 percent through the first six months of 2015.

One reason for the increase is the addition of daily flights to Atlanta in September 2014. Delta Airlines agreed to offer the flights for one year, but airport Executive Director David Haring says the strong performance could encourage the airline to continue its service.

HOMER, Neb. (AP) — A 42-year-old Iowa man has died in a head-on crash in northeast Nebraska.

The Dakota County sheriff’s office says Marvin Wayne Bird Jr. of Sioux City died in the collision around 2:15 a.m. on U.S. Highway 77 north of Homer. Bird was pronounced dead at the scene.

The sheriff’s office says 69-year-old Ed Tryon, also of Sioux City, was traveling north on the highway at the time of the crash.

Tryon was taken by medical helicopter to Mercy Medical Center in Sioux City for treatment. He was in fair condition Monday.

The sheriff’s office and the Nebraska State Patrol were investigating the crash.

LINCOLN, Neb. (AP) — Authorities in Lincoln are investigating three fires at the same trailer home in less than a month.

Firefighters were called to the third blaze shortly before 12:30 a.m. Monday. The cause of Monday’s fire hadn’t been determined, but the previous incidents have already triggered an arson investigation.

Authorities say the first fire was on the trailer’s porch. The second blaze engulfed the trailer. The latest fire started in a garbage can, and the flames spread to the home.

Lincoln Fire Capt. Jeremy Gegg says firefighters were able to extinguish the flames without any damage to adjacent homes.

Fire Inspector Ken Hilger says no damage estimates were available for the third fire because the trailer was already considered a total loss.

OMAHA, Neb. (AP) — Omaha police say nine people were taken to the hospital after an SUV driver tried to make an illegal left turn onto U.S. Highway 75.

Police say a 2000 Isuzu Rodeo with eight occupants was driving eastbound on Sorensen Parkway Sunday around 3 p.m. when it struck a 2006 Kia Spectra. Police say the Spectra with two occupants was traveling west on U.S. Highway 75 under a green traffic signal.

Police say all of the people who were treated have non-life-threatening injuries. The driver of the Rodeo, 42-year-old Kellie Y. Hughes, has been charged with second-offense driving under the influence of alcohol and other driver infractions.

Police say Hughes was uninjured. An attorney for Hughes could not be found.

BELLEVUE, Neb. (AP) — City officials in Bellevue could replace nearly 4,800 streetlights with more efficient LED lights in hopes of saving money.

The city is considering LEDs as a way to cut its $1 million annual power bill by more than one-third.

The city began exploring the idea in 2013. The Bellevue City Council has heard pitches from Siemens, Schneider Electric and Phillips over the past two months.

Assistant City Administrator Larry Burks says there’s no exact timeline for the possible change. If the lights were installed, the city would have to wait about six years before the savings offset the cost of the conversion.

The current lights cost about $207 a year each to operate, while LEDs each cost $133 a year.