The National Weather Service in Tulsa issued a flash flood warning for McIntosh and Pittsburg counties on the morning of June 12 after intense downpours.
The warning covers southwestern McIntosh County and northeastern Pittsburg County in southeastern Oklahoma, where heavy rain fell within a short period.
Flash floods are the most dangerous kind of flooding: water arrives within minutes, flooding low-lying roads, underpasses and stream crossings before drivers can react.
The initial warning ran until 11:00 AM local time; residents should stay alert for follow-up advisories, as saturated ground raises the risk of repeat flooding with any new storm.