| July 2006 | Flash Flood | Countywide | 1 killed, $320,000,000 | After a brief lull, heavy thunderstorm rains resumed just after midnight and devastating flash flood quickly developed. As much as three inches of rain fell between 12:30 and 2:30 a.m. By daybreak on the 28th, as much of 10 inches of rain had fallen on portions of Lake County since the first thunderstorms developed during the afternoon hours of the 27th. Rainfall totals included: 9.70 inches in Mentor; 7.95 inches in Concord; 6.89 inches in Kirtland; 6.30 inches just south of Painesville and 5.50 inches in Madison. Nearly every community in Lake County was hard hit by flooding. A 51 year old man disappeared around 2 a.m. while trying to move vehicles from flood waters at an Eastlake marina. He was later found deceased along a beach in Mentor. Thousands of homes were damaged and hundreds of people had to be evacuated. Widespread evacuations began in Painesville and Madison between 3 and 4 a.m. In Painesville, the Grand River rose from a stage of 2 feet on the morning of the 27th to 17.36 feet around 5 a.m. on the 28th establishing a new record stage. The old record stage was 13.1 feet set in 1979. Damage along the river was catastrophic and homes along Main Street, Millstone Drive, Gristmill Drive, Steele Avenue and Grand River Avenue were devastated. A total of 81 homes were destroyed on these streets with dozens more heavily damaged. Around 600 people had to evacuated from homes along the Grand River and approximately 25 people had to be rescued by boat from rooftops after flood waters climbed into the second floors of their homes. Several other people had to be rescued by helicopter because the flood waters were flowing too fast to allow boat rescues. In Madison Township, around 1200 people were evacuated from a mobile home park as flood waters began to encroach their neighborhhod. Dozens of homes and business in the area sustained damaged, much of it caused by flooding from the Grand River. State Route 84 was washed out by a creek near the Perry and Madison Township border. Up to 70 boats and large sections of piers were torn loose along the Grand River and washed into Lake Erie. Many of these boats were later deposited on beaches between Fairport Harbor and Madison. A floating restaurant near the mouth of the Grand River broke free during the flooding and sustained considerable damage. Homes along the mouth of the river in Fairport Harbor were littered with debris from damaged homes and businesses upstream. The Chagrin River in Eastlake rose from a stage around 4 feet on the morning of July 27th to 14.77 feet at 4:30 a.m on the 28th. Widespread damage was reported in both Eastlake and Willoughby from the resulting flooding. Significant damage was also reported in portions of Mentor, Kirtland and Concord Township. During this event emergency personnel conducted 41 separate resuce operations involving around 200 people. Around 3,600 families in Lake County applied for flood assistance. Approximately 100 homes were destroyed in the county with another 800 significantly damaged. Almost all of these homes were in Painesville, Eastlake, Madison, Fairport Harbor or Concord Township. Nearly 200 business were affected by flooding. Five bridges were destroyed by flooding and at least eight roads were washed out. Several bridges and many other roads were also damaged. Two sewer plants sustained significant damage. Damage to roads, bridges and other public infrastructure has been conservatively estimated to be around $15 million. Damage in Lake County during this event was unprecedented. The flooding has been tentatively classified as a 500 year event. |
| January 1998 | Winter Weather | Countywide | 45 hurt | no account filed |
| July 1969 | Tornado (F2) | not stated | 40 hurt, $250,000 | no account filed |
| June 2024 | Thunderstorm Wind | Madison North | 3 hurt, $50,000 | Large tree downed onto ranch house, caused significant structural damage, and injured three occupants along the 1300 block of Erieview Drive in North Madison. |
| November 2020 | Thunderstorm Wind | Mentor | 2 hurt | Large tree down in Mentor. Another tree fell on a car in Painesville and caused two injuries. |
| July 2006 | Flash Flood | Countywide | $20,000,000 | Heavy thunderstorm rains fell on Lake County during the afternoon and evening hours of July 27th. Rainfall rates at times were in excess of three inches per hour. Rainfall totals through 10 p.m. ranged from 4 to 7 inches over much of the county. Runoff from this heavy rain caused widespread flooding and rapid rises in area streams and rivers. The Painesville area was especially hard hit by flooding. Street flooding began shortly after the rain did. By late afternoon roads throughout Lake County were under water. Over 120 children had to be evacuated from a day care center in Mentor around 4 p.m. after flood waters began to creep into the building. Nearly 3.5 inches of rain fell in Painesville by 4:30 p.m, and 6.5 inches fell in Mentor by 9 p.m. The flooding continued to gradually worsen during the evening hours. Water on some streets was as much as four feet deep and there were hundreds of reports of basement flooding. A fire station in Willoughby Hills also sustained damage from flooding. The rain lessened during the late evening hours and this briefly allowed conditions to improve. |
| July 2013 | Flash Flood | Madison North | $7,000,000 | During the early morning hours of the 20th, specifically between 230 am and 530 am, torrential rain fell over extreme northeast Cuyahoga County and most of Lake County. The showers were enhanced by the warm and moist air over Lake Erie, and subsequently produced rainfall rates that exceeded the storm drainage systems in any populated communities affected. Rainfall reports ranged from 3.44 in Madison to 6 inches in Fairport Harbor. In Kirtland, an observer measured 2.20 inches between 3 am and 5 am. The rain came after two previous weeks of wet weather which had raised the water table and saturated the ground. The rainfall produced flooding in over 500 basements with the majority being sanitary sewer backups. One basement's wall caved in causing structural damage to the house. Overall 13 properties in Mentor were classified as having suffered major structural damage. The most damage was reported in western Lake between Mentor and Wickliffe. In Kirtland Hills the Baldwin Road sustained structural damage from washout. In Concord 50 homes were flooded and were not due to sewer backups. In Cuyahoga County, Euclid was one of the highly affected areas, with more than 5 inches of rain falling in a short amount of time. That left some residents with anywhere from several inches to several feet of water in their homes. The wastewater treatment plant was under 20 feet of water and much of the equipment needed to be replaced. In all over 3,500 properties sustained some form of flood inundation. |
| August 1994 | Thunderstorm Wind | not stated | $5,000,000 | no account filed |
| October 2000 | Thunderstorm Wind | Countywide | $500,000 | A 77 mph thunderstorm wind gust was measured at the Fairport Harbor Light House. Dozens of trees were downed across the county by thunderstorm winds. Areas near Lake Erie were especially hard hit with considerable damage in Mentor and Madison. Several homes were damaged and two cars crushed by trees in Mentor. Also hard hit was Painesville where a car was destroyed by a fallen tree. Trees were also downed in Willoughby and Perry. |
| April 1996 | Thunderstorm Wind | Countywide | $400,000 | no account filed |
| July 2003 | Thunderstorm Wind | Painesville | $300,000 | A thunderstorm downburst downed dozens of trees and damaged several homes. The damage path began near Liberty Street in Painesville and continued east along Prouty Road to near State Route 44 in Concord. A mobile home was crushed by a fallen tree in Concord. |
| May 2014 | Flash Flood | Madison Woodworth Ar | $250,000 | On the evening of May 21st heavy rain measured at 2.5 inches between 930 pm and 11 pm caused widespread flash flooding in the town of Madison. A tributary to the Arcola Creek which runs through downtown Madison came out of it's banks and flooded Main Street and Safford Street with water flowing higher than the fire hydrants at an estimated four feet deep. The hardest hit areas were in the east of town where numerous basements flooded. Numerous roads in town were closed due to backed up storm drainage. The flood waters receded around 2 am. |
| June 2013 | Hail | Willoughby | $250,000 | Hail as big as ping pong balls was reported for several minutes. Many vehicles were damaged by the hail. |
| August 2023 | Tornado (EF1) | Kirtland | $200,000 | A tornado with estimated peak winds of 110 mph impacted Mentor. The tornado began just west of Dartmoor Road near Mentor Avenue, where large trees were downed. Numerous additional trees were downed as the tornado tracked generally eastward. Multiple homes along Stockridge Road and Middlesex Road sustained damage (e.g. roof and siding damage) from downed trees. Extensive tree damage also occurred at the Great Lakes Mall property before the tornado shifted east-northeastward and damaged additional trees and power lines near the intersection of Johnnycake Ridge Road and Fairview Avenue. Tree damage also occurred in Wildwood Park before the tornado ended along Chillicothe Road, just south of Donald E. Kruger Park. |
| February 2011 | Flood | Fairport Harbor | $200,000 | Heavy rain and rapid snow melt led to a rapid rise in the Grand River at Painesville, which reached moderate flood stage with a crest of 13.29 feet. Rainfall reports across the basin ranged from 1.6 to 2.2 which fell mainly during the early morning hours of February 28th. Six 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. Over 100 homes in and around Painesville had to be evacuated because of the rising flood waters. In Fairport Harbor several homes near the Grand River had flooded basements. Numerous roads across the county were flooded. |
| July 2006 | Flash Flood | Countywide | $200,000 | Heavy thunderstorm rains fell on Lake County during the morning hours of July 22nd. Two to three inches of rain fell on portions of the county causing a lot of street flooding. Several roads were closed after fast flowing water was observed on them. Although there were no reports of structural damage, several homes did experience basement flooding. |
| September 1999 | Thunderstorm Wind | Madison | $200,000 | Several dozens trees downed. Seven homes suffered minor roof and structural damage from fallen trees. An additional home suffered major structural damage when a twelve ton tree fell on the roof of an upstairs bedroom. The roof over the bedroom was destroyed and one of the exterior walls was split by the tree. The split in the wall allowed heavy thunderstorms rains to spill into the ground level of the house causing significant water damage. The remaining walls of the home were bowed by the weight of the tree. Two barns and seven cars were also damaged by fallen trees. |
| July 1995 | Thunderstorm Wind | Countywide | $200,000 | no account filed |
| November 2014 | High Wind | not stated | $150,000 | High winds of at least 60 mph downed trees and limbs throughout Lake County. Scattered power outages were reported. |
| June 2013 | Thunderstorm Wind | Willoughby | $150,000 | Thunderstorm winds in excess of 60 mph downed dozens of trees and caused widespread power outage. In excess of 3,000 utility customers lost power during this event. |
| August 2011 | Hail | Mentor | $150,000 | Penny to hen egg sized hail was observed for several minutes in Mentor. Much of the hail was golf ball sized or larger. This resulted in many vehicles being damaged. |
| January 2007 | Flood | Willoughby | $150,000 | Runoff from heavy rains on January 5th caused the Chagrin River in Willoughby to go above the flood stage of 11 feet during the evening hours of January 5th. The river crested at 13.04 feet around midnight on the 6th and fell back below flood stage around 9 a.m. on the 6th. Flooding occurred along the northern sections of Trailard, Milann and Chagrin Drives in Willoughby Hills. Several homes on these streets sustained damage from flooding. |
| July 1999 | Thunderstorm Wind | Painesville | $150,000 | Many large trees downed in Painesville. One tree pierced the roof of a nursing home with branches ending up less than a foot away from an elderly woman laying in bed. Three classic cars were severely damaged when the garage they were in was destroyed by a fallen tree. A brand new sport utility vehicle was also destroyed by a fallen tree. An additional dozen trees were downed to the east of Painesville in North Perry. |
| March 2015 | Flood | (Lnn)Willoughby Arpt | $125,000 | The ice jam in Willoughby Hills broke during the early morning hours of the 14th. The water and ice came up fast in the West Island Drive community of Eastlake around 6 am. Around a dozen homes were evacuated. The damages were limited to docks and some low lying basements and garages. The community of Eastlake is especially vulnerable to ice jam flooding because they are at the confluence of the river and Lake Erie. Ice cutters were unable to move any ice at the mouth of the Chagrin River in Eastlake, which contributed to the severity of the ice jams. Despite the lake being ice covered, the river was able to recede by early afternoon on the 14th. |
| May 2011 | Thunderstorm Wind | East Lake | $125,000 | Thunderstorm winds caused damage across Lake County. A couple buildings sustained damage in East Lake. Roads had to be closed because of fallen trees in Lake Township, Madison Township and also in the city of Mentor. Numerous other trees were reported down across the county. |
| May 2004 | Thunderstorm Wind | Countywide | $125,000 | A line of severe thunderstorms moved across Lake County and downed dozens of trees. Scattered power outages were also reported. Several homes and vehicles were damaged by fallen trees and flying debris. |
| June 2015 | Thunderstorm Wind | Lake Line | $120,000 | The Eastlake Fire Department reported 32 large trees down across the city|Several of these trees caused damage to homes and vehicles. Most trees were snapped above the base. Numerous power lines were also brought down. |
| August 2023 | Flash Flood | Willoughby | $100,000 | Widespread road closures due to flash flooding in Willoughby, Eastlake, and Willowick. Multiple water rescues conducted due to vehicles driving into flooded roadways. Road closures in this area included US-2 near Stevens Boulevard, Vine Street just east of US-2, Riverside Boulevard and Riverside Drive, and Lake Shore Boulevard near Vine Street. Radar estimated 2.25 to 3 inches of rainfall in a three to four hour period, with 1 to 1.5 inches of rain falling in the hour immediately preceding the flash flooding. |
| March 2015 | Flood | Waite Hill | $100,000 | During the overnight hours of the 12th an ice jam developed on the Chagrin River in Willoughby Hills Ohio. The ice backed up in the southern loop of the Chagrin River just west of the Trailard Drive community. The streets were first overtopped in southwest corner and north east of the Horseshoe Glen subdivision (Trailard Dr.). About 20 people were voluntarily evacuated after the water levels doubled, rising to 15 feet. This is the worst it's been since 1977-78, Chris Donovan, a longtime resident who lives on the east portion of Trailard Drive near the river. The initial assessment of the homes indicated marginal flood damage. The water levels did not reach the first floor of most of the homes. |
| May 2011 | Thunderstorm Wind | East Lake | $100,000 | Thunderstorm winds downed numerous large trees onto power lines across the area. Police reported a transformer on fire and wide spread power outages. |
| July 2011 | Thunderstorm Wind | Madison | $100,000 | Thunderstorm winds downed numerous large trees in the area. Numerous homes in the area were damaged as a result of the downed trees. |
| October 1999 | Thunderstorm Wind | Countywide | $100,000 | Trees and large limbs downed throughout the county including 40 in Madison Township alone. Part of a home in Willoughby was crushed by a large tree and a home in Mentor sustained major roof damage from a fallen tree. Three additional homes suffered minor roof damage in Madison Township. |
| August 1995 | Thunderstorm Wind | Countywide | $90,000 | Numerous trees were downed, some on power lines. A large building in Fairport Harbor that was used to store boats suffered significant damage as a large portion of the metal walls were peeled off. |
| July 1999 | Thunderstorm Wind | Countywide | $75,000 | A 60 mph gust was measured in Willoughby and many trees were downed across the county. Four homes suffered minor damage from fallen trees near the Chagrin River in Willoughby. An additional house was damaged in Concord by falling trees. |
| August 2024 | Thunderstorm Wind | Lake Line | $50,000 | Large tree was downed at Lake County Yacht Club in Eastlake. The tree damaged a pavilion and a boat. |
| October 2018 | Thunderstorm Wind | Lakeshore | $50,000 | There were multiple reports of trees and power lines blown down. |
| May 2011 | Thunderstorm Wind | Mentor | $50,000 | Thunderstorm winds downed many trees in the Holly Hills Development along Cannon Ridge Drive and Brayes Manor Drive in Mentor. |
| May 2010 | Hail | Kirtland | $50,000 | Nickel to walnut sized hail was observed. A few vehicles were damaged. |
| April 2000 | Lightning | East Lake | $50,000 | Lightning struck an apartment building and caused a fire. The fire did extensive damage to several apartments in the building. |
| July 2006 | Thunderstorm Wind | Kirtland | $35,000 | Several trees were reported down, one of which fell onto a house causing extensive structural damage. |
| July 2005 | Thunderstorm Wind | Perry | $35,000 | Thunderstorm winds downed several trees and power poles in Madison and Perry Townships. |
| July 2005 | Thunderstorm Wind | Countywide | $30,000 | Numerous trees were reported down across the county, with the largest concentration of downed trees in Perry and Madison Townships. One tree landed on a parked car causing some damage. |
| June 1997 | Flash Flood | Countywide | $30,000 | no account filed |
| September 2016 | Thunderstorm Wind | Wickliffe | $25,000 | Thunderstorm winds downed a few trees and limbs resulting in some power outages. |
| May 2013 | Hail | East Lake | $25,000 | Golf ball sized hail was observed. A few vehicles were damaged. |
| June 2013 | Thunderstorm Wind | Mentor | $25,000 | Thunderstorm winds downed several trees and knocked down some power lines. Scattered power outages were reported. |
| July 2011 | Thunderstorm Wind | Kirtland | $25,000 | Thunderstorm winds downed many trees across Lake County. |
| April 2011 | Thunderstorm Wind | Perry | $25,000 | Thunderstorm winds damaged eight green houses. |
| May 2011 | Thunderstorm Wind | Concord | $25,000 | Thunderstorm winds downed several trees and large limbs in Concord Township. |
| June 2011 | Thunderstorm Wind | Painesville | $25,000 | Thunderstorm winds downed several trees. West Jackson Street had to be closed because of fallen trees. |
| February 2009 | Flood | East Lake | $25,000 | Minor ice jam flooding developed along the Chagrin River in Eastlake and the Grand River near Painesville as nearly foot thick ice jammed near the mouth of each river. Ice along the Chagrin River backed up on the Lake Shore Boulevard bridge, flooding a local restaurant parking lot and piling ice up to four feet deep in a nearby marina. On the Grand River, ice jams formed on several bridges in Painesville and Fairport Harbor. The largest jam formed against a railroad bridge between the two communities, and threatened to flood homes along Hidden Harbor Drive in Fairport Harbor. The jam remained in place for nearly two days, but released before significant property damage occurred. |
| September 2000 | Thunderstorm Wind | Countywide | $25,000 | Thunderstorm winds downed many trees across the county. |
| August 2000 | Tornado (F0) | Mentor | $25,000 | A weak tornado moved inland from Lake Erie and was on the ground in Mentor for a little less than one mile. Many trees were knocked down with a few homes sustaining minor damage. |
| August 2000 | Thunderstorm Wind | Countywide | $25,000 | Thunderstorm winds downed several dozen trees in the southern half of the county. Kent, Atwater and Rootstown were especially hard hit. |
| August 1998 | Thunderstorm Wind | Countywide | $25,000 | Numerous trees and power lines were downed. At Fairport Harbor, a wind gust was measured at 63 miles per hour. |
| August 2024 | Thunderstorm Wind | (Cgf)Cuyahoga Co Arp | $20,000 | Willoughby Hills Fire Department had a portion of its station's roof removed. |
| July 2023 | Thunderstorm Wind | Painesville | $20,000 | Trees downed onto house on Avery Terrace in Painesville and caused significant damage. |
| March 2020 | Flash Flood | Mentor | $20,000 | A portion of Interstate 90, a main throughway, was closed between State Route 306 and State Route 615 due to flooding. Several disabled semi trucks that stalled in high water. |
| January 2019 | Flood | Lake Line | $20,000 | The combination of rain, snowmelt, and river ice produced an ice jam on January 23rd. At 330 PM the river came out of banks in Eastlake. The first location to flood was Trader Jacks Riverside Grille. At approximately 1000 PM the river rose to about 15 feet with large ice chunks. The flood waters inundated West Island and Admiral Drive in Eastlake, resulting in swift water rescues. In all six families needed rescue. Erie Road was also cut off by floodwaters and ice. |
| August 2018 | Thunderstorm Wind | Wickliffe | $20,000 | Thunderstorm winds downed some trees and power lines along Rockefeller Road. The road was completely blocked by one of the trees. |