The following events were reported: Flash Flood, Flood. These occurred near station USW00014820, approximately 32.6096 km away, between 2023-08-23 19:30:00 and 2023-08-24 10:00:00. The flood was caused by Heavy Rain. Thankfully, no injuries or fatalities were reported. The events caused property damage valued at 5365000.0 and crop damage of 0.0. Episode Narrative: An anomalously-warm and moist air mass was in place across much of the Central Plains and Midwest, resulting in strong to perhaps extreme instability in addition to tropical-like precipitable water values exceeding 2.0 inches. The Lower Great Lakes region, specifically northern Ohio and Northwest Pennsylvania found itself on the eastern edge of this heat dome. Strong northwest flow aloft persisted along the periphery of the anomalously-warm and moist air mass, allowing for organized storms to develop across northern Ohio and Northwest Pennsylvania. A constant feed of moisture allowed these storms to maintain their intensity throughout the evening and overnight hours of Aug 23, 2023 and into the early morning hours of Aug 24, 2023 as they slowly pivoted southwest. Numerous flash flood warnings were issued with 3 considerable tags utilized throughout the course of the event. The hardest-hit areas were along the lakeshore between Toledo and Cleveland where there were several reports of 5 to 7 inches of rainfall. Elsewhere, generally 2 to 4 inches of rainfall was common, most of which fell in only a few hours. The area was on the edge of an extremely unstable airmass with sufficient deep-layer shear for organized convection. An anomalously-warm and moist air mass was in place across much of the Central Plains and Midwest, resulting in strong to perhaps extreme instability in addition to tropical-like precipitable water values exceeding 2.0 inches. Event Narrative: Extensive flash flooding in North Olmsted, Brooklyn, Brook Park, Parma, and Parma Heights. Widespread basement flooding and road closures. Several underpasses under I-480 inundated with flood waters. A structure collapse was reported in North Olmsted due to the weight of water on the roof. Flooded roadways include Brookpark Road, West Ridgewood Drive, Pleasant Valley Road near York Road, and Sprague Road near West 130th Street. Multiple water rescues reported in this area. Cleveland Metroparks Zoo experienced flood damage due to flooding of Big Creek. The USGS river gage near the zoo on Big Creek rose from 3.8 feet to 12.8 feet in 70 minutes before the gage was knocked out of service by a fallen tree. Radar estimated 1.5 to 2.25 inches of rainfall in less than three hours, with much of the rainfall falling in less than one hour. Flash flooding reported in Oberlin and Pittsfield Township due to heavy rainfall. Several reports of flooded basements. OH-303 closed between Pitts Road and Quarry Road due to flash flooding. Radar estimated 2.5 to 3.5 inches of rainfall in a three hour period. Widespread road closures due to flash flooding in Willoughby, Eastlake, and Willowick. Multiple water rescues conducted due to vehicles driving into flooded roadways. Road closures in this area included US-2 near Stevens Boulevard, Vine Street just east of US-2, Riverside Boulevard and Riverside Drive, and Lake Shore Boulevard near Vine Street. Radar estimated 2.25 to 3 inches of rainfall in a three to four hour period, with 1 to 1.5 inches of rain falling in the hour immediately preceding the flash flooding. Widespread flash flooding leading to road closures in Willoughby Hills and Waite Hill. Flooded roadways include Milann Drive, River Road near Beech Hills Drive, River Road near Rivera Ridge Road, Chagrin Drive, and Trailard Drive. Flash flooding in and around Wellington. Lorain County Fairgrounds inundated with more than a foot of standing water, flooding cars and livestock trailers in the fairgrounds parking area, and several barns on the fairground property. Some basement flooding reported in Wellington. OH-18 closed west of Wellington between Oh-511 and Quarry Road and east of Wellington between Hawley Road and West Road. Radar estimated 3 to 4 inches of rainfall in a three hour period. Widespread flash flooding across northern Lorain County due to heavy rainfall. Widespread basement and isolated first floor flooding reported in Lorain, Elyria, Amherst, Avon Lake, Avon, and North Ridgeville. Widespread flooded roadways reported. Post event damage assessments reported hundreds of homes and businesses flooded. Radar estimated rainfall of 3 to 4 inches falling in a three hour period, which matched several measured rain gauge reports from the area. Widespread, extensive flash flooding in Cleveland, Lakewood, Rocky River, Westlake, and Bay Village. Interstate 90 flooded with several feet of water with multiple water rescues on both eastbound and westbound lanes near the McKinley Avenue exit. Lakeshore Boulevard and Martin Luther King Boulevard closed due to flooding in Cleveland, with multiple cars stranded in high water. Extensive basement flooding in Rocky River, Lakewood, and Bay Village. Flooding from standing water at Lorain County Fairgrounds and remaining road closures in and around Wellington after the initial flash flooding subsided. Flash flooding of area creeks/streams due to heavy rainfall. Road closures reported on Fairmount Boulevard near the Chagrin River and Bishop Road near East Branch Euclid Creek due to flooding. Radar estimated 2.25 to 3.25 inches of rainfall in a three hour period, much of which fell in 90 minutes or less. Multiple road closures due to flash flooding in eastern Erie County, including in Vermilion and Florence Township. Main Road closed at Chappel Creek due to flooding of the creek. Sperry Road closed between OH-60 and the Erie/Lorain county line. Reports of cars stranded in flooded roadways in Vermilion. Radar estimated 3 to 3.75 inches of rainfall in a three hour period. State Route 58 and County Road 281 closed due to flooding of East Branch Black River in Sullivan Township in northeast Ashland County. Radar estimated 3 to 3.5 inches of rainfall in a 2 to 3 hours period. Widespread road closures across western Medina County due to flash flooding. Water rescue reported on Richman Road in Chatham Township after vehicle drove into roadway flooded up to 4 feet in water depth and swept off roadway. Reported road closures include Spencer Mills Road near Coon Creek, River Corners Road near East Branch Black River, Firestone Road near East Branch Black River, Willow Road near Repp Run, and Friendsville Road near Killbuck Creek. Radar estimated rainfall of 2.25 to 3.5 inches in a three hour period ending at Midnight EDT on August 24, 2023. Multiple road closures in and around Solon due to flash flooding. Road closures include US-422 at Brainard Road and Bainbridge Road near Harper Road. Radar estimated 1.75 to 2.25 inches of rainfall in a three hour period, with most of the rain falling in a 60 to 90 minute period.