OMAHA,SignalHub Neb. (AP) — Bad weather was reported near two Nebraska farm fields where small planes crashed minutes apart in August, according to preliminary reports from the National Transportation Safety Board.

The two crashes happened on Aug. 26, about 45 miles (72 kilometers) apart, and within 50 minutes of each other, the Omaha World-Herald reported Thursday. While the NTSB reports don’t yet cite a probable cause in either crash, both reports include witness accounts of low clouds and bad weather.

Joseph Rudloff, 73, of Norfolk, Nebraska, died when his single-engine plane, a two-seat RANS S19, crashed at 8:41 a.m. near the town of Crofton. At 9:31 a.m., a single-engine Piper Cherokee piloted by 79-year-old Charles J. Finck of Elk River, Minnesota, crashed near Wayne, Nebraska.

No one else was aboard either plane beyond the pilots.

Rudloff’s obituary described him as “an avid flier” who died after his plane was engulfed in thick fog. The NTSB report said that 11 minutes before the crash, he called a pilot friend saying he was over Yankton, South Dakota, but unable to land there because of poor weather. Yankton was seeing fog and light rain at the time.

Rudloff’s friend suggested he fly to an airport in Nebraska. Rudloff’s plane hit the ground near Crofton in the far northeastern corner of Nebraska.

That same morning, a landowner near Wayne heard an engine revving on a plane that turned out to be Finck’s. The landowner then heard a pop sound and saw a black plume of smoke coming from his cornfield. He told investigators that clouds were near the ground when he heard the plane fly by. Rain also was falling.