Low pressure moved northeast across northwest Ohio during the overnight hours of the 15th into the 16th. Locally heavy rainfall fell across eastern Ohio with amounts of one to two inches, with amounts over three inches in Cuyahoga County. The heavy rain over the urbanized drainage basin in Cuyahoga County resulted in urban flooding, notably in the Cleveland Heights area as well as areas in and around Akron. The heaviest rain fell over the Cuyahoga River basin which crested less than an inch from major flood stage. The major flood stage was recently raised due to extensive mitigation efforts, which kept impacts exclusive to road closures and no inundations of properties other than a few basements and garages in Valley View.
The Mahoning River basin received less rainfall than the Cuyahoga River, however stream levels had been elevated due to reservoir releases in the area. The higher river stages at the onset of the event allowed for a rapid rise at the gauge in Leavittsburg from below action to major flood stage within 24 hours. The immediately downstream station at Warren Ohio saw moderate flooding. The Killbuck Creek also rose to moderate flood stage. Several other rivers flooded in this event but only reached minor flood stage.

Flood in CUYAHOGA, OHIO
From 15-APR-18 18:05:00 to 15-APR-18 22:45:00 (EST-5)
Location: WILLOWICK
Flood cause: Heavy Rain
Property damage: 35.00K
Crop damage: 0.00K
Reported by: 911 Call Center

An early morning rain event on the 15th dropped a little over an inch of rain over portions of central and northern Ohio. Later that afternoon and evening a line of moderate to heavy rain moved over the same areas with an additional 1 to 2 inches with locally higher amounts in Cuyahoga County. The rainfall rates increased to around 2.5 inches per hour between 6 pm and 7 pm. Most of the flooding occurred after the second round of rain showers overwhelmed storm drainage and reached already swollen creeks and streams. Urban flooding soon developed hitting areas east of Cleveland the hardest including Euclid and Cleveland Heights. At lease three cars were submerged  in high water along Cedar Road in the Cleveland Heights area. Doan Brook and Euclid Creeks came out of their banks  but did not reach any roads.  There was a landslide at a construction site in Cleveland closing at least one lane of Interstate 77 near Broadway. Westbound lanes of Interstate 90 was closed near east 140th Street in Cleveland. Numerous local and county roads were flooded or closed during the event.

Flood in TRUMBULL, OHIO
From 16-APR-18 03:00:00 to 17-APR-18 20:00:00 (EST-5)
Location: LEAVITTSBURG
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The Mahoning River at Leavittsburg came out of banks on April 16 around 3 am and rose to major flood stage by that evening. Several homes were evacuated mainly in the Meadowbrook Drive, Dover, and 7th Street areas of Leavittsburg. The river receded back into its banks in the afternoon of the 17th. At least one home had first floor inundation with several more flooded in their garages and basements. The flooding was the result of a basin average 0.5��� on the 14th into the 15th followed by 2.5��� of rainfall later on the afternoon. Rainfall was briefly heavy during the evening of the 15th with rainfall rates around 2��� per hour. This produced rapid runoff and caused a rapid rise in the river. The river crested at 15.53 on the afternoon of the 16th, about a half foot above major flood stage. The Mahoning River at Warren reached moderate flood stage with primarily road flooding. The Eagle Creek, a tributary to the Mahoning River above Leavittsburg, reached minor flood stage.

Flood in WAYNE, OHIO
From 15-APR-18 18:00:00 to 16-APR-18 03:00:00 (EST-5)
Location: LATTASBURG
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Over a dozen roads were flooded after heavy rain moved over portions of Wayne County on the evening of the 15th. Between 0.5-1.0 of rain fell on the night of the 14th into the 15th, with a second round of heavier rain that afternoon and evening. The second round of rain produced around 2 to 2.5 of additional rain. The cumulative runoff from this rain caused flooding of several roads across the county.

Flood in CUYAHOGA, OHIO
From 16-APR-18 00:00:00 to 17-APR-18 02:00:00 (EST-5)
Location: VALLEY VIEW
Flood cause: Heavy Rain
Property damage: 3.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Cuyahoga River at Independence, a river forecast site, reach moderate flood stage. The river reached flood stage around 8 pm on the 15th, exceeded moderate flood stage a few hours later, and crested at 20.9 feet at 6 am on the 1th. The river came out of banks flooding roads in the Valley View community. Some garages and basements were flooded, but damage was limited. The major flood stage, 21.0 feet, was recently raised due to extensive mitigation efforts which were validated during this event.