Unsafe flash flooding created havoc across the Washington, D.C. metro area on Monday, CBS affiliate WUSA-TV reported.
In all, the airport was slammed with about 3.4 inches of rain in a two-hour span, while roughly 6.3 inches fell on Frederick, Maryland, and about 4.5 inches in Arlington, Virginia.
According to the National Weather Service's Andrew Snyder, Monday's heavy downpour marked the heaviest July 8 rainfall for 148 years.More news: Supply draw, Gulf of Mexico storm push oil prices upward
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Videos of the flooding around the National Mall surfaced across social media. Some people were stranded in cars and several high water rescues were reported. Areas where the ground is almost saturated from heavy rain over the past few days are most at risk for flash flooding. Photos shared by reporters show that the basement began to flood before officials acted quickly in an effort to stave off water damages.
Turn around, don't drown when encountering flooded roads.
It is hard to predict exactly when the rains will come, but National Weather service meteorologists say the peak hours are likely in the afternoon and evening. Leaks dripped through into Metro stations as well.
Areas of concern reportedly include the Great Falls, Virginia, area and southeastern Montgomery County, Maryland as heavy rains continue to batter much of the area, including the District of Columbia.