Flash flood warnings were issued for multiple areas of the metro, including Independence, Raytown, and Blue Springs.

Significant rainfall from storms caused flash flooding in parts of Montgomery County, Maryland, located north of Washington, D.C., on Saturday, trapping many in buildings and cars.

Forecasters warned more rain and flash flood risk is expected on July 15 after storms flooded out roads the day before.

LOUISVILLE, Ky. (WAVE) - An ALERT DAY is in place this evening as clusters of thunderstorms move into the region. Some storms may produce strong gusty winds. Flash flooding remains the top concern, especially along the I-64 corridor through the overnight hours.

HONOLULU (HawaiiNewsNow) - A flash flood warning has been extended until 11 a.m. for north Kauai as heavy rain from earlier this morning is causing flooding. The National Weather Service in Honolulu said the warning is in effect for the area including Hanalei, Princeville, Kapaa, North Fork Wailua Trail, Wailua Homestead and Wainiha.

Heavy rains and flash flooding in the northeast have caused two deaths in New Jersey. More rain is expected through mid-week for portions of the eastern and central U.S.

More rain could be on the way, with an additional half an inch to an inch of rainfall expected in Kansas City.

The heavy downpours wreaked havoc across the city with footage showing commuters overwhelmed by floodwaters in various subway stations.