Off-and-on rain showers Wednesday and persistent downpours into Thursday afternoon led to washed-over roads, rising rivers and a flash flood warning through the afternoon for most of the metro area.

The National Weather Service advised drivers to be especially careful and not drive into standing or moving water. KC Scout reported numerous wrecks on area interstates.

By 2 p.m., the Weather Service said, 3 to 4 inches had fallen in some spots Thursday. In Lee’s Summit, Blue Springs, Grain Valley and eastern Independence, the flash flood warning lasts until 6 p.m.

The Little Blue River at Lee’s Summit and Phelps roads was at 20 feet, just below the minor flood stage of 21 feet, and had flooded the trailhead after rising quickly Thursday.

Near Lake City Army Ammunition Plant, the Little Blue had risen above 21 feet by 1:30 p.m. Thursday and was forecast to reach 21.7 feet at 8 p.m. before falling below flood stage (18 feet) on Friday.

The Missouri River at Sibley was forecast to crest above 24 feet at 7 p.m. Thursday. Flood stage there is 22 feet. Downriver at Napoleon, the Missouri was at 22.4 feet at 2 p.m., and the flood stage there is 17 feet.