The following events were reported: Flash Flood, Hail, Thunderstorm Wind. These occurred near station USW00014820, approximately 13.5585 km away, between 2023-07-20 17:54:00 and 2023-07-20 21:00:00. The events included records with hailstones measuring 24.75 inches.Thankfully, no injuries or fatalities were reported. The events caused property damage valued at 4000000.0 and crop damage of 0.0. Episode Narrative: A surface low moved generally eastward from east-central Lower MI to the southeastern shore of Lake Huron during the evening of the 20th. Simultaneously, the low's warm front swept northeastward across southern ON and western NY toward the northern shore of Lake Ontario as the low's trailing cold front moved generally eastward across southeastern Lower MI and far-northeastern IN to central Lake Erie and northeastern OH.||Multiple lines and clusters of multicell thunderstorms persisted generally eastward and southeastward across northern OH during the early through mid-evening hours of the 20th and produced sporadic severe hail and straight-line convective wind damage as the storms encountered moderate to strong MUCAPE and effective bulk shear, respectively, within the warm sector. An embedded supercell produced large hail in Westlake, a western suburb of Cleveland. Although the thunderstorms moved progressively across the area, the thunderstorms produced torrential rainfall across Cuyahoga County, with instantaneous rainfall rates of 4 to 5 inches per hour and rainfall totals of 1.75 to 2.5 inches in a period of one hour or less. The torrential rainfall resulted in instances of flash flooding. A surface low moved generally eastward from east-central Lower MI to the southeastern shore of Lake Huron during the evening of the 20th. Event Narrative: Hail up to quarter-size at NWS Cleveland Forecast Office in Brooklyn Heights. Several roadways around and near downtown Cleveland flooded with cars stranded. Flooding of Doan Brook upstream of Lower Shaker Lake caused flooding of South Park Boulevard. Hail up to half dollar-size in Bedford. Tree downed in Brunswick. Hail up to hen egg-size in Westlake. Hail up to quarter-size in North Olmsted. Hail up to ping pong ball-size in Brooklyn. Hail up to ping pong ball-size in Valley View. Flash flooding across the western suburbs of Cleveland, including Bay Village, North Olmsted, Fairview Park, Rocky River and Lakewood. Notable road closures due to flooding include I-90 East near McKinley Avenue and West 117th Avenue between Berea Road and Detroit Avenue in Lakewood, West 130th Street and Bellaire Road and West 150th Street north of Brookpark Road in Cleveland. Great Northern Avenue north of Brookpark Road was flooded with several feet of standing water in North Olmsted. Extensive basement flooding reported, including between 1 to 2 dozen basements in Bay Village and 175 basements in Fairview Park. Tree downed in Medina. Hail up to golf ball-size in Parma Heights. Hail up to ping pong ball-size in Parma. Several flooded roadways near Cleveland Hopkins International Airport, including OH-237 South near Brookpark Road and Snow Road at OH-237. Several cars inundated by flood waters, requiring assistance from Cleveland Hopkins Airport Fire Rescue. More than one dozen flooded basements reported in Parma and North Royalton. Flooded roadways in Parma and North Royalton include Regency Drive, State Road, Thoreau Drive, Antoinette Drive, and North Akins Road near South Gateway Drive. Tree downed about two-miles ENE of Fairview Park. Power pole downed along Laurel Road, between South Carpenter Road and Eisenhower Drive. Several tree limbs and entire trees downed in Macedonia. Several large tree limbs snapped and an entire tree downed in Berea. Hail up to ping pong ball-size in Seven Hills. Trees downed in North Olmsted. Large tree branch snapped near Lakewood Park in Lakewood. Two trees downed about two-miles east of Avon. Hail up to quarter-size in Avon. Hail up to quarter-size in Lakewood. Flash flooding along Big Creek from just north of Brookpark Road downstream through the Cleveland Metroparks Zoo. The USGS river gage reading at Big Creek near Brooklyn (Brookpark Road) rose from 3.8 feet to a crest of 11.2 feet in 90 minutes, with the flooded creek causing flooding of a parking lot with less than 5 parked cars inundated. Downstream, the USGS river gage reading at Big Creek at Cleveland (Cleveland Metroparks Zoo) rose from 5.0 feet to a crest of 12.9 feet in 70 minutes. Flooding from the creek caused minor damage to festival displays staged in the low lying areas of the Zoo near the creek.