| August 2007 | Flash Flood | Findlay | $100,000,000 | Heavy rain producing thunderstorms affected Hancock County during the late evening hours of August 20th and early morning hours of August 21st. Rainfall rates with the strongest storms approached three inches per hour. An automated sensor at the Findlay Airport measured a total of 5.28 inches. A Cooperative Observer in Findlay measured a storm total of 6.00 inches. Runoff from this rain combined with ground already saturated from earlier rains led to unprecedented and catastrophic flooding across portions of Hancock County. Local officials stated that the flooding in the county was the worst ever! The Findlay area was especially hard hit as the Blanchard River crested 7.5 feet above flood stage. Flooding along the Blanchard River caused both Eagle and Lye Creeks to back up and overflow. Damage along all three was significant. Flooding and damage was also reported along Howard Run on the north side of Findlay. Over 2300 homes and apartments in Hancock County were damaged by flooding. Around 150 of these were damaged enough to be declared destroyed with around 300 more damaged enough to be uninhabitable. The remainder suffered lesser damages, mainly in the form of basement flooding. In addition, dozens of businesses were damaged by the flooding. Government facilities were also hard hit. In Findlay alone, two government buildings were destroyed and several others heavily damaged. Damage to these buildings was estimated to be about $6 million with an additional $2.4 million in losses to six Findlay school buildings. Damage to the City of Findlay water pollution control center was estimated to be around $1.7 million. 41 buildings at Findlay University sustained varying amounts of damage. Nearly 2000 people had to be evacuated during this event. Dozens of rescues also had to be conducted. Water rescue teams from surrounding areas assisted in these efforts. Damage to infrastructure was also significant. Over 50 bridges in the county sustained damage. Damage to these has been estimated at several million dollars. Damage to the East Main Street bridge in Findlay along topped $1 million. Dozens of roads, street and highways, including Interstate 75 had to be closed because of flooding. Cleanup and overtime costs incurred by local government agencies was substantial. Finally, standing water and erosion from the runoff caused damage to agricultural interests in the county. |
| May 2011 | Hail | Findlay | $85,000,000 | A supercell thunderstorm moved across Hancock County. Hail as large as baseballs fell in association with this thunderstorm. The western half of the city of Findlay was especially hard hit. Golf ball or larger hail affected an area bordered by State Route 12 to the south, Township Road 99 to the north, County Road 140 to the west and roughly Main Street to the east. As many as 4,000 homes and business in this area may have been damaged by the hail. Thousands of automobiles also sustained damage from the hail. One automobile dealership on the north side of Findlay had over 400 vehicles damaged by the hail. Hundreds of homes also sustained damage from broken windows or damaged siding. This event could end up being one of costliest hail storms in Ohio history. |
| February 2011 | Flood | Findlay | $1,200,000 | Heavy rain and rapid snow melt led to widespread flooding across Hancock County. Rainfall totals across the county ranged from one to three inches on February 27th and 28th. Up to ten inches of heavy snow was on the ground at the onset of the rain. This snow rapidly melted as temperatures warmed into the 50s on the 28th. Up to an additional inch of water equivalent rainfall was released from the melted snow. Several people had be rescued from stranded vehicles. Hundreds of homes in the county sustained damage, mainly from basement flooding. Many roads had to be closed because of the flooding, mainly in downtown Findlay. The Blanchard River reached 16.42 feet,the 6th highest crest of record. Both the Lye and Eagle Creeks reached major flood stages as well. Officially Mt. Blanchard observed 2.32 inches of rain, with Findlay reporting 2.08 inches. |
| January 2007 | Flood | Findlay | $950,000 | Runoff from heavy rains on January 5th caused the Blanchard River in Findlay to go above the flood stage of 11 feet during the early morning hours of January 6th. The river crested at 14.78 feet during the evening hours of the 7th and fell back below flood stage just before daybreak on the 8th. Significant flooding occurred along the river in Findlay. Several businesses in the downtown area were damaged by flooding. Many streets and roads had to be closed. Streets along Eagle Creek and Lye Creek were also hard hit by flooding. Dozens of homes sustained significant damage from flooding. |
| November 2017 | Thunderstorm Wind | Findlay | $500,000 | A thunderstorm downburst produced wind gusts in excess of 80 mph and caused a three mile long damage path across the northwest and north ends of Findlay. The damage path began in an industrial park off of Westfield Drive just west of Interstate 75. Warehouse and factory buildings in the area sustained varying amounts of roof and wall damage. In some instances cinder block walls gave way after the roofs above them were torn away or damaged. A restaurant at a shopping plaza near Interstate 75 was also damaged. The damage path continued northeast across the interstate. Several light poles at the athletic fields at Findlay High School were toppled. One of the poles landed on a parked vehicle and a second struck the high school. The high school sustained some roof damage and also had several windows blown out. From the high school, the damage path continued down Trenton Avenue. Another restaurant sustained major damage after an exterior wall was heavily damaged. Right down the street, a mobile home was destroyed and several others damaged. Two travel trailers parked nearby were overturned and destroyed. One of those was blown into a garage causing a cinder block wall to collapse. A roof was blown off of a detached garage. Several large hardwood trees were snapped near the intersection of Trenton Avenue and Main Street. More snapped or uprooted trees were observed in the neighborhood around East Melrose Avenue. A couple mobile homes along Melrose Avenue were shifted from their foundations and a three story apartment building along Crystal Avenue lost a section of roofing. An industrial building nearby was also heavily damaged after part of the roof was torn off and a wall partially collapsed. Scattered power outages were reported across the area. |
| July 2005 | Flash Flood | Findlay | $300,000 | Thunderstorms dumped locally heavy rains on the central portion of Hancock County. Rainfall rates with the stronger storms approached two inches per hour. Spotters in Findlay measured 2.5 inches of rain during this event. Widespread street and lowland flooding was reported in Findlay. Most of this flooding occurred in the eastern and northern sections of the city where several roads had to be closed because of flood waters up to two feet deep. At least five motorists had to rescued from cars stranded in flood waters on Tiffin Avenue (U.S. Route 224) and Bright Road. Several stores sustained damages from flooding. Dozens of homes were also damaged by lowland and basement flooding. The Blanchard River left it's banks east of Findlay and flooded State Route 568. |
| June 2010 | Thunderstorm Wind | Findlay | $200,000 | An automated sensor at the Findlay Airport measured a 78 mph thunderstorm wind gust. The strong winds downed dozens of trees and large limbs in the Findlay area south through the Arlington area. A large tree crushed a house on County Road 172 southeast of Findlay. Scattered power outages were reported. |
| May 2011 | Hail | Findlay | $150,000 | Thunderstorms produced a large swath of hail ranging in size from penny to hen egg during this event. The largest of the hail, ping pong ball size to hen egg size, occurred in the Vanlue area. Some vehicles were damaged by the hail. |
| March 2017 | Thunderstorm Wind | Findlay | $125,000 | A line of thunderstorms moved across the Findlay area causing some damage. Four homes on Heather Drive lost sections of siding or roofing. A couple homes also sustained broken windows. Many trees and limbs were also reported down, including several in Riverside Park just to the south. |
| November 2013 | Thunderstorm Wind | Findlay | $100,000 | A line of severe thunderstorms moved across Hancock County downing many trees and causing scattered power outages. |
| July 2012 | Thunderstorm Wind | Findlay | $100,000 | Thunderstorm winds downed several trees and utility poles. |
| May 2011 | Thunderstorm Wind | Findlay | $75,000 | Thunderstorm winds destroyed a barn located on State Route 568. |
| July 2013 | Thunderstorm Wind | Findlay | $50,000 | Thunderstorm winds downed many large tree limbs. County Road 140 and U.S. Route 224 had to be closed because of downed power lines. |
| May 2011 | Thunderstorm Wind | Findlay | $50,000 | Thunderstorm winds downed large trees and power lines. |
| July 1994 | Thunderstorm Wind | Findlay | $50,000 | Trees and limbs were downed, some on cars and power lines. |
| July 2017 | Thunderstorm Wind | Findlay | $25,000 | Thunderstorm wind gusts downed some power poles and lines near JC Donnell Stadium on the south side of Findlay. |
| July 2007 | Hail | Findlay | $25,000 | Hail ranging from walnut to penny size was observed for approximately fifteen minutes. |
| April 2005 | Hail | Findlay | $25,000 | Walnut size hail was observed near Findley. Several vehicles were damaged. |
| June 2005 | Thunderstorm Wind | Findlay | $25,000 | Numerous trees and power poles were blown down. A semi truck was also blown over from thunderstorm winds. |
| November 1998 | Thunderstorm Wind | Findlay | $25,000 | Numerous trees and power lines were downed. |
| June 2008 | Thunderstorm Wind | Findlay | $20,000 | A billboard was blown down near mile marker 156 on Interstate 75 in Findlay. The billboard blocked the southbound lane of the interstate. |
| June 2013 | Thunderstorm Wind | Findlay | $15,000 | Thunderstorm winds toppled two utility poles. |
| July 2005 | Thunderstorm Wind | Findlay | $15,000 | Observed winds as the severe thunderstorms moved through the area were estimated at 60 mph. Numerous trees, large limbs, utility poles, and power lines were downed. |
| November 2002 | Hail | Findlay | $15,000 | Walnut size hail was observed six miles southeast of Findlay. |
| July 1999 | Thunderstorm Wind | Findlay | $15,000 | Numerous trees and power lines downed. |
| May 2021 | Flood | Findlay | $10,000 | The Eagle Creek watershed received an average of 1.50 of rainfall on Sunday the 9th between 6 am and early afternoon. The runoff resulted in moderate flooding as indicated by the USGS river gage which crested at 11.0 feet on the morning of the 10th. The flood waters inundated Brookside Road, 6th Street, Eagle Creek Park, and Firestine Park. Approximately two dozen Homes along Brookside road were surrounded and inaccessible and experienced basement flooding. |
| May 2012 | Thunderstorm Wind | Findlay | $10,000 | Thunderstorms winds downed several large tree limbs across central Hancock County. |
| July 2012 | Thunderstorm Wind | Findlay | $10,000 | Thunderstorm winds downed a few trees. |
| October 2010 | Thunderstorm Wind | Findlay | $10,000 | Thunderstorms winds estimated to be as much as 70 mph damaged a house. |
| July 2002 | Thunderstorm Wind | Findlay | $10,000 | Thunderstorm winds downed several large tree limbs and snapped a power pole. |
| August 2000 | Thunderstorm Wind | Findlay | $10,000 | Thunderstorm winds downed many trees and limbs. |
| June 1998 | Thunderstorm Wind | Findlay | $10,000 | Part of the roof of a large building was blown off. One tree was uprooted and other trees and telephone poles were damaged. |
| August 2013 | Thunderstorm Wind | Findlay | $6,000 | Law Enforcement relayed a report of thunderstorm winds bringing down a 12 to 16 inch diameter tree and an 8 inch diameter tree limb. The public reported additional trees down in the area. |
| June 2020 | Thunderstorm Wind | Findlay | $5,000 | Hancock County Sheriff Dispatch reported trees and wires were down in the Findlay area. |
| May 2019 | Thunderstorm Wind | Findlay | $5,000 | Several trees and power lines were blown down on Decker Avenue. |
| April 2013 | Flood | Findlay | $5,000 | Heavy rain pushed the Blanchard River in Findlay into major flood. The river crested just over 14 feet, more than a half a foot above major flood stage. The impacts were mainly isolated along the business district where the water inundated streets and some low lying basements. Homes along the Eagle Creek were threatened, but none were inundated. |
| July 2012 | Hail | Findlay | $5,000 | Half dollar sized hail was observed. |
| July 2011 | Thunderstorm Wind | Findlay | $5,000 | Thunderstorm winds downed a few large tree limbs and downed two power lines. |
| July 2011 | Thunderstorm Wind | Findlay | $5,000 | Thunderstorm winds downed a few large trees and several large tree limbs in the area. |
| July 2007 | Thunderstorm Wind | Findlay | $5,000 | Two trees and a large limb were reported down. |
| August 2003 | Thunderstorm Wind | Findlay | $5,000 | Thunderstorm winds downed many large tree limbs in Findlay. |
| March 2003 | Hail | Findlay | $5,000 | Quarter size hail was observed near Findlay. |
| July 2003 | Thunderstorm Wind | Findlay | $5,000 | Thunderstorm winds downed a few large tree limbs. |
| July 2002 | Thunderstorm Wind | Findlay | $5,000 | Thunderstorm winds downed trees in Findlay and Vanlue. |
| June 2002 | Hail | Findlay | $5,000 | Dime size hail was observed. |
| June 1998 | Thunderstorm Wind | Findlay | $5,000 | Trees and power lines were downed at Findlay and McComb. |
| August 1997 | Thunderstorm Wind | Findlay | $5,000 | Trees and power lines were downed. |
| May 2011 | Thunderstorm Wind | Findlay | $4,000 | Thunderstorm winds downed several large tree limbs. |
| May 2006 | Thunderstorm Wind | Findlay | $4,000 | Several large limbs were reported down. |
| June 2004 | Thunderstorm Wind | Findlay | $4,000 | Thunderstorm winds downed a few large tree limbs. |
| June 2025 | Thunderstorm Wind | Findlay | $3,000 | Utility pole snapped and commercial building's awning collapsed in Findlay. |
| April 2011 | Thunderstorm Wind | Findlay | $3,000 | Thunderstorm winds downed a couple of trees. |
| May 2010 | Thunderstorm Wind | Findlay | $3,000 | Thunderstorm winds downed a few large tree limbs. |
| June 2008 | Thunderstorm Wind | Findlay | $3,000 | Several trees were reported down. |
| August 1998 | Thunderstorm Wind | Findlay | $3,000 | Trees were downed. |
| May 2006 | Thunderstorm Wind | Findlay | $2,000 | Several large limbs were reported down. |
| July 2005 | Thunderstorm Wind | Findlay | $2,000 | A few large limbs and power lines were reported down. |
| May 2004 | Hail | Findlay | $2,000 | Penny to quarter size hail was observed. |
| March 2003 | Hail | Findlay | $2,000 | Penny size hail was observed on the west side of Findlay. |
| May 2003 | Thunderstorm Wind | Findlay | $2,000 | Thunderstorm winds downed a large tree. |
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