| April 1965 | Tornado (F4) | not stated | 6 killed, 30 hurt, $25,000,000 | no account filed |
| April 2013 | Flood | Arcadia | 2 killed, $25,000 | A 64-year-old Arcadia man died when he tried to cross a flooded Mount Pleasant Road, south of 266th Street. His vehicle was swept off the road around 7:45 p.m. on the 19th and moved about 100 yards downstream in Cicero Creek. ||A 42-year-old Arcadia man and his car was swept away in the same location near Cicero Creek on the early morning of the 20th. He was found dead on the morning of the 21st. There was a report of road blocks being across the street at the time.||The flooding was due to thunderstorm heavy rainfall. |
| March 2021 | Thunderstorm Wind | Indianapolis Metro A | 1 killed, $30,000 | A tree was downed by thunderstorm wind gusts at the 1900 block of Westwood Drive. The tree fell on a 40 year old man who was in the backyard at the time and was not able to escape before the winds arrived. This was an isolated area of much stronger winds than the otherwise modest 50kt gusts nearby. It was noted via drone footage that in this isolated area, numerous trees were uprooted, but all fell generally along the storm motion indicating straight line winds. |
| April 1999 | Lightning | Carmel | 1 killed | A 32 year old male was struck by an isolated cloud-to-ground lightning bolt and became comatose. He died a week later. The man was struck while standing next to a tree in his yard. |
| June 2005 | Lightning | Sheridan | 6 hurt | Six people were struck by lightning at at paintball facility in Sheridan. Two were treated and released at the scene, with four being transported to area hospitals for treatment. The injuries were not serious. |
| November 1965 | Tornado (F3) | not stated | 5 hurt, $250,000 | no account filed |
| June 2008 | Thunderstorm Wind | Sheridan | 2 hurt, $50,000 | Ten buildings were damaged, numerous trees down, and two semi trucks blown over by thunderstorm winds. Injuries were reported but no exact number given. A barn was said to be destroyed by the thunderstorm winds, which was likely among the aforementioned damaged buildings. |
| July 1998 | Thunderstorm Wind | Sheridan | 2 hurt, $5,000 | Thunderstorm winds blew down the second story of a building under construction injuring two. |
| May 1996 | Lightning | Carmel | 1 hurt, $500,000 | no account filed |
| March 2011 | Thunderstorm Wind | Noblesville | 1 hurt, $60,000 | Based on a National Weather Service damage survey, it appeared the wind damage in Noblesville during the evening of Wednesday March 23 was caused by downbursting straight line winds. The majority of the damage was uprooted pine trees and downed Bradford Pear trees and limbs, both of which tend to be damaged by winds of 60 to 80 mph. The trees were laid down in an outward fanning or diverging pattern often found with a downburst wind event. Most trees west of State Road 37 were blown down by a strong south wind. Trees and fences east of State Road 37 were blown down by strong west-southwest winds. This damage occurred at the lead edge of the storm, not the usual location at the rear of the storm where a tornado typically would form. Other damage included stripped shingles and siding from around a dozen homes. |
| June 2008 | Thunderstorm Wind | Sheridan | 1 hurt, $50,000 | Damage was spread across the northern portion of Hamilton county. Most of the damage was in a line from Sheridan to Arcadia to Omega to Aroma then out of the county to the north-northeast. Trees of different diameters were downed. About 10 structures, most of them barns, had been damaged and trees blocked several roadways. In addition two semi tractor-trailers had blown over, one at 236th Street and US 31 causing personal injury and another at 281st Street and Indiana 213, in which a tree fell on top of a semi. |
| April 1975 | Tornado (F1) | not stated | 1 hurt, $25,000 | no account filed |
| June 2002 | Lightning | Carmel | 1 hurt | Lightning struck a man in a parking lot. |
| May 1999 | Thunderstorm Wind | Noblesville | 1 hurt | no account filed |
| September 2003 | Flash Flood | Countywide | $5,000,000 | no account filed |
| May 2000 | Hail | Sheridan | $5,000,000 | no account filed |
| June 2010 | Lightning | Home Place | $3,500,000 | Newspaper and broadcast media reported a lightning strike was the suspected cause of a fire of a shopping strip in western Carmel, Indiana. Firefighters think lightning struck the El Rodeo restaurant, located in the 12-unit Weston Shoppes, and quickly spread across the shopping center. The strip mall owner said continuing lightning strikes prevented firefighters from hosing the flames from their ladder trucks, hampering their efforts to save the building. Damage estimates, not including each store's inventory, could be between 3 and 4 million dollars. Firefighters were still on the scene 8 1/2 hours later. |
| April 2025 | Tornado (EF1) | Home Place | $600,000 | This fifth tornado to impact central Indiana tracked to the east-northeast through mainly southeastern portions of the Carmel area, from near 116th Street and Pennsylvania Street to 146th Street and Community Drive. Trees to the south of an office building were uprooted and downed in a convergent manner toward the building. Damage to the office building was confined to the southwest corner and the entry way on the east side of the structure. Metal framing around windows on the southwest corner were pulled outward as was the large entry way frame and windows. The tornado continued to the northeast with numerous homes and apartment buildings sustaining roof and siding damage. Many trees were also uprooted or snapped along the path in a clearly convergent manner in areas where trees came down in groups. Damage was not consistent along the track, with breaks of up to one-third mile where very little if any damage occurred. Damage from the tornado ended about 800 feet south-southeast of the intersection of East 146th Street and Community Drive. Peak wind gusts were 105 mph. |
| June 2023 | Thunderstorm Wind | Fishers | $600,000 | A 60 mph thunderstorm wind gust was estimated at this location with a 6 inch tree limb downed nearby. Over 13000 power outages across the county caused by the storm. |
| June 2002 | Lightning | Fishers | $400,000 | Lightning struck a house. |
| May 1998 | Lightning | Carmel | $400,000 | Lightning struck 5 Carmel area homes igniting fires. |
| July 2001 | Lightning | Carmel | $350,000 | no account filed |
| May 2008 | Lightning | Clarksville | $300,000 | Lightning struck a home and caused a fire to begin on the rear corner of the home. The winds caught the home next door on fire. A third house had minor damage from the fire. |
| June 2008 | Lightning | Fishers | $300,000 | Lightning struck a house and caught the house on fire. The house was a total loss. |
| September 2003 | Tornado (F1) | Arcadia | $300,000 | An F1 tornado cut a 2 and a quarter mile path across northern Hamilton near Arcadia damaging 1 home and destroying several barns. The tornado also knocked down numerous trees there. |
| August 1998 | Lightning | Central Portion | $300,000 | Lightning struck five buildings causing varying degrees of fire damage. In Fishers, a house was nearly destroyed by fire with estimates at 250 thousand dollars. |
| April 2020 | Thunderstorm Wind | Noblesville | $250,000 | Widespread wind damage reported to emergency manager across the county. 30,000 power outages were reported with numerous tree and tree limbs snapped. |
| June 2008 | Lightning | Noblesville | $250,000 | A fire, believed to be started by lightning striking a tree parallel to the garage of a house on Westchester Boulevard in Noblesville, was not discovered until hours after initiation. The lightning likely reached the house via a utility line. Fire fighters were called around 5 AM EST by a passerby. Flames were still visible as late as 7 AM EST. |
| April 2005 | Lightning | Fishers | $250,000 | Lightning struck and damaged at least seven homes in the Fishers area early in the morning of 22 April 2005. One of these homes was so heavily damaged that it was possible that the home may have needed to be razed. |
| November 1992 | Tornado (F2) | not stated | $250,000 | no account filed |
| October 1990 | Tornado (F1) | not stated | $250,000 | no account filed |
| September 1988 | Tornado (F1) | not stated | $250,000 | no account filed |
| March 1976 | Tornado (F0) | not stated | $250,000 | no account filed |
| June 1974 | Tornado (F2) | not stated | $250,000 | no account filed |
| June 1973 | Tornado (F1) | not stated | $250,000 | no account filed |
| March 2020 | Flash Flood | Clare | $200,000 | Widespread flash flooding occurred across Hamilton County. An apartment complex in Westfield experienced significant flooding with several cars flooded out in the parking lot. Emergency management reported numerous water rescues were needed and the county dispatch experienced very high contact load. A large number of roads were closed during the time frame of the flooding event due to a combination of standing and flowing water. |
| July 2005 | Lightning | Fishers | $190,000 | Lightning sparked a fire which severely damaged a home. The damage amount is estimated. |
| June 2007 | Lightning | Noblesville | $180,000 | There was confirmation of two houses being struck by lightning in the Westfield area. A firefighter was hurt when the ceiling of a house collapsed on him when he was inside the house. One house sustained substantial damage of $150,000 to $175,000. The other house had minor damage to the attic. |
| February 2008 | Lightning | Noblesville | $175,000 | A house was struck by lightning as storms moved through the area. When firefighters arrived, they found the home's basement in flames. It look them about an hour to completely put the fire out. The blaze originated in the basement utility room. The basement was destroyed. |
| April 2007 | Tornado (EF2) | Arcadia | $150,000 | This tornado touched down at 7:25 P.M. EDT, as reported by trained spotters, about 3 miles east of Arcadia . The tornado continued a path to the northeast, lifting around 7:30 P.M. EDT. An EF2 rating was assigned to this tornado given the significant destruction of a barn, and the tornado moving a dual wheel pickup truck/trailer rig nearly fifteen feet. Winds were estimated near 120 mph. Several other outbuildings, houses, barns, vehicles, trees, sheds, and garages suffered damage as well. |
| July 2006 | Lightning | Fishers | $150,000 | A home was severely damaged by a lightning-induced fire. The fire was initially contained to the roof and attic, before the roof collapsed, causing damage to the second floor. Vinyl siding was melted on a neighboring home. |
| May 2004 | Tornado (F0) | Atlanta | $150,000 | An F0 tornado damaged a barn and some farm equipment as it briefly touched down near Atlanta. |
| May 1996 | Lightning | Westfield | $130,000 | no account filed |
| May 1996 | Lightning | Carmel | $120,000 | no account filed |
| August 2000 | Lightning | Carmel | $110,000 | no account filed |
| April 2025 | Flash Flood | Home Place | $100,000 | Several cars stranded in water which required assistance in Carmel and Fishers. Total rainfall ranged from 1.5 to 2.1 inches. |
| July 2024 | Thunderstorm Wind | Atlanta | $100,000 | Thunderstorm winds produced a 2-mile path of downed trees and tree limbs, including a barn damaged near Atlanta, before a tree was snapped in Cicero. |
| May 2008 | Lightning | Fishers | $100,000 | Lightning struck a house in Fishers causing extensive fire, heat, and smoke damage. The first floor collapsed into the basement. |
| July 2008 | Lightning | Fishers | $100,000 | A lightning strike caused significant damage to most of the second floor of a large home while water damage was throughout the home. Time of occurrence and damage cost are rough estimates. |
| April 2003 | Thunderstorm Wind | Carmel | $100,000 | no account filed |
| July 2002 | Thunderstorm Wind | Carmel | $100,000 | no account filed |
| August 2000 | Lightning | Carmel | $95,000 | no account filed |
| September 2001 | Lightning | Carmel | $85,000 | A house was struck by lightning. The fire was contained to the basement by the rest of the house received heavy smoke damage. |
| August 2000 | Lightning | Carmel | $81,000 | no account filed |
| May 1999 | Lightning | Noblesville | $70,000 | Lightning struck a house causing a fire in the attic. |
| June 2002 | Lightning | Noblesville | $60,000 | Lightning struck a house. |
| April 2024 | Flood | Fishers | $50,000 | Heavy Rainfall totaling 1.75 to 3.00 inches in 15 hours through 0800 EST on the 11th across portions of southern Hamilton County, produced isolated areal flooding which led to a traffic accident on US-31 north of Westfield which closed all southbound lanes for several hours. Additionally, Hoosier Road in Fishers was impassible due to high water from 106th Street to 126th Street. |
| August 2024 | Flash Flood | Riverwood | $50,000 | Deep floodwaters noted on Middletown Avenue which made it up to Durbin Elementary. Widespread significant flash flooding on roads east of Noblesville. Rain amounts of 3.5 inches in one hour recorded on an automated weather station. Another nearby rain gauge had 5.5 inches of precipitation. Hamilton County Emergency Management issued a travel advisory due to flooding concerns across the county. |
| March 2021 | Thunderstorm Wind | Carmel | $50,000 | Several trees knocked down due to thunderstorm wind gusts. One tree had fallen on a home. |
| June 2019 | Flash Flood | Noblesville | $50,000 | Water rescues were occurring across parts of Noblesville due to thunderstorm heavy rainfall. |
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