A frontal boundary stretched from west to east across northern Ohio during the early morning hours of the 7th. This frontal boundary was associated with low pressure centered over the Plains. Through the day on the 7th, this boundary moved north allowing a warm and humid airmass to set up over the region. Thunderstorms developed across the area during the morning hours of the 7th, and again during the afternoon and evening hours.

Thunderstorm Wind in TRUMBULL, OHIO
From 07-AUG-07 09:55:00 to 07-AUG-07 09:55:00 (EST-5)
Location: MESOPOTAMIA
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tree limbs and utility wires were reported down.

Thunderstorm Wind in SUMMIT, OHIO
From 07-AUG-07 21:15:00 to 07-AUG-07 21:20:00 (EST-5)
Location: RICHFIELD
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two large trees and two large limbs were reported down.

Thunderstorm Wind in MEDINA, OHIO
From 07-AUG-07 18:30:00 to 07-AUG-07 18:30:00 (EST-5)
Location: VALLEY CITY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A tree and several large limbs were reported down.

Flash Flood in LORAIN, OHIO
From 07-AUG-07 09:30:00 to 07-AUG-07 12:00:00 (EST-5)
Location: LORAIN
Flood cause: Heavy Rain
Property damage: 1.50M
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rain developed across the county during the morning hours of the 7th, and flash flooding quickly developed across northern portions of Lorain County. In the City of Lorain, one report described a man driving down East 28th Street and quickly turning around to avoid becoming stranded in the high water.  Shortly after he turned around, he saw cars that continued down the street begin to float in the high water.  Floodwaters quickly affected other streets throughout the City of Lorain with numerous reports of stranded cars and vehicle rescues. With conditions deteriorating, roads and underpasses throughout the city were closed.  Heavy rainfall also caused flooding of a nursing home and damage to at least forty homes.
In Sheffield Township several rescues were performed on people stranded in the quickly rising waters. Newspaper articles indicate that flooding of buildings also took place in Avon and Vermilion.
Rainfall reports in Lorain County include 1.66 inches at the Lorain-Elyria Airport and 3.77 inches in Sheffield Lake.

Thunderstorm Wind in CUYAHOGA, OHIO
From 07-AUG-07 08:30:00 to 07-AUG-07 08:30:00 (EST-5)
Location: CLEVELAND
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large tree limbs were reported down.

Thunderstorm Wind in PORTAGE, OHIO
From 07-AUG-07 21:50:00 to 07-AUG-07 21:50:00 (EST-5)
Location: RAVENNA
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were reported down both in Ravenna and Rootstown.

Thunderstorm Wind in LAKE, OHIO
From 07-AUG-07 20:45:00 to 07-AUG-07 20:45:00 (EST-5)
Location: WICKLIFFE
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Public

Several large limbs were reported down.

Thunderstorm Wind in MAHONING, OHIO
From 07-AUG-07 22:15:00 to 07-AUG-07 22:15:00 (EST-5)
Location: BERLIN CENTER
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous trees were reported down across western portions of the county.

Thunderstorm Wind in CUYAHOGA, OHIO
From 07-AUG-07 21:05:00 to 07-AUG-07 21:05:00 (EST-5)
Location: NORTH ROYALTON
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Public

Numerous large trees were reported down.

Flash Flood in CUYAHOGA, OHIO
From 07-AUG-07 08:30:00 to 07-AUG-07 11:30:00 (EST-5)
Location: BEREA
Flood cause: Heavy Rain
Property damage: 2.20M
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain and thunderstorms moved across Cuyahoga County during the morning hours of the 7th. The first reports of flash flooding occurred in Berea and then quickly expanded into Brookpark.  Several roads, including State Route 237 through Berea, were closed.  As the heavy rain continued, major streets across Cleveland became flooded.  In downtown Cleveland, flash flooding occurred along streets just north of Superior Avenue, especially near the intersection with Martin Luther King Jr. Drive.  In this area, seventeen people had to be rescused from their vehicles, and a total of thirty five rescues were performed on other streets throughout downtown Cleveland.  Approximately thirty eight residences and two businesses sustained major flood damage. Rainfall reports across Cuyahoga County from this event ranged from 1.74 inches in North Royalton to 3.74 inches in Westlake.  The majority of the rain fell in a four hour time period between 7 am and 11 am.

Hail in WOOD, OHIO
From 07-AUG-07 18:30:00 to 07-AUG-07 18:30:00 (EST-5)
Location: LUCKEY
Magnitude: 1.00 
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Quarter size hail was observed.