A dangerous storm system, with damaging winds and large hail, cut a destructive path across part of the southeastern United States on Monday, after spawning a tornado that barreled through the Dallas-Fort Worth area late Sunday, and others in rural areas of Oklahoma and Missouri. The violent weather was blamed for at least four deaths.

Two people, one in Arkansas and one in Oklahoma, died when trees fell on their houses. And two boys died, possibly of carbon monoxide poisoning, in a travel trailer in Oklahoma where they had been using a portable gasoline-powered generator to compensate for a power outage, the authorities said; a medical examiner had not yet determined the exact cause of death.

Stormy weather continued across the mid-South on Monday, and tornado watches were issued for counties in southern Illinois, western Kentucky, southeastern Missouri, northern Mississippi and western Tennessee, but no more tornadoes were reported. On Tuesday, severe thunderstorms were possible from the Deep South all the way to Ohio and Michigan, with a slight chance of tornado development near the Gulf Coast, the National Weather Service said.

The funnel cloud that wove ominously through the densely populated Dallas-Fort Worth region on Sunday night produced maximum winds of 140 miles an hour, the National Weather Service said.