| June 2002 | Flash Flood | Harrison | 1 hurt | Heavy rainfall occurred over parts of Boone County and resulted in flash flooding in and around the Harrison area. Up to 3 inches of rain fell in Harrison in about 2 hours, with reports of as much as 5 to 6 inches of rain in the Batavia area. Highway 392 was covered by high water near Batavia. Bear Creek went out if it's banks, about 6 miles northwest of Harrison, and covered two lanes of U.S. Highway 65 at the Bear Creek Springs community. Also at Bear Creek Springs, five people had to be rescued from flooded businesses near the creek. One person who was rescued was taken to the hospital for treatment of a laceration. A nearby campground was also flooded. |
| August 2000 | Lightning | Harrison | 1 hurt | no account filed |
| June 2008 | Thunderstorm Wind | Harrison | $250,000 | Many trees were down, with some falling on houses and vehicles. A number of power lines were blown down, as well. |
| August 2012 | Thunderstorm Wind | Harrison | $100,000 | Part of the metal roof was blown off a business, the roof was taken off a pawn shop, power poles were snapped, and power lines and business signs were blown down. |
| July 2011 | Thunderstorm Wind | Harrison | $80,000 | Trees and power lines were blown down on Pine St. and Union Rd., damaging several vehicles. Part of a metal roof was blown off. |
| June 2009 | Thunderstorm Wind | Harrison | $75,000 | Shingles were blown off some roofs, a few barns were blown down, and trees and power lines were blown down. |
| August 1998 | Thunderstorm Wind | Harrison | $60,000 | no account filed |
| October 2009 | Flash Flood | Harrison | $40,000 | Low water crossings in Harrison off of U.S. Highway 65 were flooded. Seven water rescues occurred. |
| July 2012 | Thunderstorm Wind | Harrison | $10,000 | A very large tree fell, damaging the front of a house. |
| February 2012 | Lightning | Harrison | $10,000 | Lightning struck a tree, blowing the tree apart. Pieces of the tree went across the street, breaking out the window of a house and damaging a pickup truck. |
| July 2010 | Flash Flood | Harrison | $10,000 | Streets flooded and low water crossings had to be barricaded in Harrison. |
| July 2009 | Flash Flood | Harrison | $10,000 | Trees and brush were washed down Crooked Creek and piled up against the Hudson Road bridge. The county road department had to use a grappling truck to clear out the brush pile-up. |
| April 1994 | Hail | Harrison | $5,000 | Several vehicles were damaged by golf ball-size hail. |
| April 1994 | Hail | Harrison | $5,000 | Several vehicles were damaged by golf ball-size hail. |
| June 1994 | Thunderstorm Wind | Harrison | $5,000 | Thunderstorm winds downed some trees onto Highway 65. |
| July 2010 | Flash Flood | Harrison | $2,000 | Several low water crossings were flooded in Harrison. |
| March 2024 | Thunderstorm Wind | Harrison | - | A few trees were blown down in the town of Harrison. |
| May 2024 | Hail | Harrison | - | Quarter-sized hail fell in the town of Harrison. |
| November 2024 | Flash Flood | Harrison | - | A trained spotter provided pictures of water flooding many roads making them impassable along with water that had began to flood several local businesses. The nearby Harrison ASOS (KHRO) had recorded 5.39 inches of total rainfall for the calendar day. |
| November 2024 | Heavy Rain | Harrison | - | A rainfall total of 4.41 inches was measured at the Harrison ASOS (KHRO) over a 24 hour period ending on November 4, 2025 at 6 AM CST. |
| May 2023 | Thunderstorm Wind | Harrison | - | A power line was blown down on the north side of Harrison. |
| June 2023 | Flash Flood | Harrison | - | Flash flooding occurred in the town of Harrison. |
| June 2023 | Flash Flood | Harrison | - | High water over the roadway at the intersection of Arkansas highway 7 and Central Avenue in Harrison. |
| May 2022 | Hail | Harrison | - | A social media video showed nickel sized hail falling in Harrison. |
| April 2022 | Flash Flood | Harrison | - | Standing water was reported on several streets in Harrison. |
| May 2021 | Thunderstorm Wind | Harrison | - | The county judge reported trees and power lines down. |
| August 2019 | Thunderstorm Wind | Harrison | - | A tree limb was blown down onto a power line, which caused power outages. |
| May 2019 | Thunderstorm Wind | Harrison | - | Trees were reported blown down around Harrison. |
| December 2018 | Thunderstorm Wind | Harrison | - | Trees and power lines were blown down in Harrison. |
| December 2018 | Thunderstorm Wind | Harrison | - | Winds ripped the back door off its hinges on a home on Union Road. |
| April 2017 | Flash Flood | Harrison | - | Multiple roads in and around Harrison were flooded and/or not passable. |
| August 2016 | Thunderstorm Wind | Harrison | - | Trees were blown down. |
| August 2016 | Flash Flood | Harrison | - | Several low water crossings were flooded between Harrison and the northern part of the county. |
| August 2016 | Flash Flood | Harrison | - | Northbound lanes at the intersection of Highways 62 and 65 were underwater. Other side streets in the area were completely underwater as well. |
| July 2015 | Thunderstorm Wind | Harrison | - | Trees were blown down in Harrison. |
| September 2014 | Hail | Harrison | - | Hail fell at the Harrison Police Department. |
| September 2009 | Heavy Rain | Harrison | - | It was reported that 1.10 inches of rain fell in 10 minutes. |
| May 2008 | Thunderstorm Wind | Harrison | - | Trees were down around the city. |
| October 2007 | Thunderstorm Wind | Harrison | - | Trees were reported down many places in Boone County. |
| May 2006 | Flash Flood | Harrison | - | Heavy rains produced street flooding in the city of Harrison. |
| September 2006 | Funnel Cloud | Harrison | - | Rain wrapped funnel cloud sighted. |
| July 2005 | Thunderstorm Wind | Harrison | - | Several large trees were blown down. |
| May 2004 | Flash Flood | Harrison | - | Heavy rains caused flash flooding to occur in Harrison. Several roads were covered by high water and impassible for several hours. |
| August 2003 | Flash Flood | Harrison | - | Heavy rains resulting in some street flooding on the north side of Harrison. Several streets were impassible for a few hours due to the high water levels. |
| August 2003 | Flash Flood | Harrison | - | Locally heavy rainfall cause some street flooding to occur in Harrison. |
| March 2002 | Thunderstorm Wind | Harrison | - | Several homes and businesses sustained roof damage in Harrison. |
| April 2001 | Thunderstorm Wind | Harrison | - | Several large tree limbs were blown down. |
| May 1997 | Thunderstorm Wind | Harrison | - | Thunderstorm winds gusted to 65 mph at the intersection of Highways 65 and 62. |
| May 1997 | Thunderstorm Wind | Harrison | - | Thunderstorm winds downed some trees just north of Harrison. |
| August 1997 | Thunderstorm Wind | Harrison | - | Some trees were blown down near Harrison. |
| April 1995 | Thunderstorm Wind | Harrison | - | Thunderstorm winds downed a few trees. |
| June 1995 | Thunderstorm Wind | Harrison | - | Thunderstorm winds knocked down some trees and damaged some small buildings. |
| April 1994 | Hail | Harrison | - | Several vehicles were damaged by golf ball-size hail. |
| May 2022 | Hail | Harrison | - | no account filed |
| April 2022 | Hail | Harrison | - | no account filed |
| August 2019 | Hail | Harrison | - | no account filed |
| June 2018 | Hail | Harrison | - | no account filed |
| March 2015 | Hail | Harrison | - | no account filed |
| September 2014 | Hail | Harrison | - | no account filed |
| September 2014 | Hail | Harrison | - | no account filed |