Did ellicott city flood yesterday1/11/2024 Much of this rain fell in 90 minutes or less. Areas in yellow are over 2.5 inches red is over 4 inches and the pixels of white near Ellicott City are estimates of over 6 inches. The image below is filtered to show only amounts over two inches. The MRMS (Multi-Radar/Multi-Sensor) precipitation estimates from the event show the swath of most persistent heavy rain that occurred from northern Montgomery County, Maryland to Baltimore City. Based on video evidence and resident interviews, the most severe flooding occurred between 8:05pm and 9:00pm. The first report of flooding near Ellicott City was in the Chatham area west of downtown at 8:01pm. The National Weather Service issued a flash flood warning, which included Ellicott City and Baltimore, at 7:18pm. Several convective cells formed ahead of a larger area of rain, which then was followed by persistent heavy rain, with very little lightning, in a west-to-east band for around 90 minutes between 6:45pm and 8:30pm, and especially heaviest between 7:45 and 8:00. This radar loop, from around 5:30pm to around 9:00pm and centered on Ellicott City, shows the evolution of the rain across the Ellicott City/Baltimore area. Many buildings in Old Town Ellicott City were damaged, some significantly, and hundreds of vehicles were impacted. On Saturday, July 30th, 2016, torrential rainfall occurred in and near Ellicott City, Maryland, causing severe flash flooding and destruction to the historic Old Town portion of the city. Ellicott City, Maryland - Historic Rain and Flash Flooding of July 30th, 2016
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