An intense low pressure system developed over the Southern Plains, in conjunction with an upper-level trough. This low pressure system developed much like a winter weather system, as the storm deepened as it progressed eastward. The upper-level low also became a closed-low, which is typical of a winter system. The slow movement of this system brought extremely heavy rain to northern Ohio with some locations in NW Ohio receiving up to 6��� of rain in a 52 hour period. Several areas in Northwest Ohio were flooded due to excess rainfall and standing water was high in area ditches and fields. Homes in Avon Lake and Bay Village once again had flooding issues, as this area received another 2.5-3��� of rain and did not fully recover from excessive rainfall from earlier in the week.
Winds were very strong with this system as it approached from the southwest. Gale force winds were recorded on portions of Lake Erie and strong northeast winds caused lakeshore flooding in Lucas, Ottawa, and Sandusky counties. Several trees and large branches fell with the strong winds and the high amounts of water that fell through the month of June.
Many rivers in northern Ohio flooded. The Cuyahoga River at Independence and the Portage River at Woodville both went into major flood. The Maumee River at Grand Rapids and Waterville approached 100 year flood levels and water entered businesses in the downtown district of Grand Rapids.

Flood in WOOD, OHIO
From 29-JUN-15 03:00:00 to 30-JUN-15 23:59:00 (EST-5)
Location: GRAND RAPIDS
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: County Official

The Maumee River flooded it's banks in the city of Grand Rapids in late June due to several days of heavy rain across the entire Maumee Basin. The river crested at 19.2 feet in moderate flood stage around 8 pm on the 29th. Several businesses in downtown Grand Rapids were inundated with a few inches of water. West, Beach, and Front Streets were the most impacted. Grand Rapids Chamber of Commerce said of this flooding that this was the most significant non-winter flood event Grand Rapids has ever experienced.

Flood in LUCAS, OHIO
From 26-JUN-15 22:00:00 to 28-JUN-15 02:00:00 (EST-5)
Location: BERKEY
Flood cause: Heavy Rain
Property damage: 9.00M
Crop damage: 0.00K
Reported by: ASOS

Rain gauges across Lucas County measured upwards of 5.78 inches (Toledo Metcalf Airport) on the 27th. A Cocorahs rain gauge 2.2 miles WSW of Toledo measured 3.70. This heavy rain over already saturated soils created widespread flooding in Lucas County. Over 600 homes reported flooding to the local officials. Most of the flooding was contained in basements. Widespread road closures continued into the 28th.

Flood in CUYAHOGA, OHIO
From 27-JUN-15 14:00:00 to 27-JUN-15 18:00:00 (EST-5)
Location: (CGF)CUYAHOGA CO ARP
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: County Official

In Beachwood a rain gauge recorded 2.6 inches of, most of which fell during two bursts, at 1 p.m. and 3 p.m. June 27. Over a hundred homes in the area reported flooding in their basements and many roads were closed.

Flood in WOOD, OHIO
From 28-JUN-15 16:00:00 to 30-JUN-15 03:00:00 (EST-5)
Location: PEMBERVILLE
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

The heavy rain on the 27th caused the Portage River to flood. At the river forecast point in Woodville the river exceeded major flood stage (13.5') reaching 13.71' on the morning of the 29th. Parks near the river were inundated with some minor damage to park property. Some basements were inundated in Pemberville upstream of Woodville.