| September 2016 | Flash Flood | Viroqua Muni Arpt | 1 killed, $8,880,000 | Heavy rain caused flash flooding to occur across much of Vernon County. One person was killed near Victory when a mudslide caused a home to slide down a hillside very early in the morning of the 22nd. Numerous other houses were damaged by rocks, debris and floodwaters in Victory when a culvert used to divert water around town became blocked. In and around De Soto, two people had to be rescued from flood waters and 15 people were evacuated from a trailer park. The flood waters also covered State Highway 35. Flooding along Coe Hollow Creek prompted officials to evacuate Sidie Hollow Park but not before one person had to be rescued. Flood waters from the Kickapoo River flooded the west side of La Farge and caused State Highway 131 to be closed both north and south of town. Flooding from the Kickapoo River also sent water spilling into Viola and Readstown. State Highway 82 was closed west of La Farge because of flood waters from Otter Creek. Street flooding occurred in Viroqua where the water was up to 4 feet deep on Main Street. A state of emergency was declared in the county and there were up to 90 roads closed due to flooding. All together, there were a total of 44 homes and businesses destroyed. |
| September 2016 | Flood | Viroqua Muni Arpt | 1 killed, $986,000 | One man drowned in southern Vernon County when he attempted to drive his pickup across a flooded road. The pickup and cattle trailer he was pulling got stuck in the flood waters with the water eventually filling the passenger compartment of the truck. |
| May 2004 | Flash Flood | Southwest Portion | 1 killed, $15,000 | no account filed |
| March 2019 | Flood | Victory | 1 killed | An elderly woman drowned in Mississippi River flood waters in the vicinity of Blackhawk Park. Sometime during the night of March 29th into the early morning hours of March 30th, the woman wandered away from her home and was swept away by flood waters. |
| July 2022 | Thunderstorm Wind | Stoddard | 2 hurt, $175,000 | An estimated 70 mph wind gust occurred in Stoddard with lots of trees blown down. At the marina campground, at least one camper was flipped with the occupants sustaining minor injuries. Several vehicles were damaged by downed trees or branches. A rail line was closed when trees fell across it. |
| June 1997 | Thunderstorm Wind | Newry | 2 hurt, $35,000 | no account filed |
| June 1980 | Tornado (F3) | not stated | 1 hurt, $2,500,000 | no account filed |
| August 2005 | Tornado (F1) | Esofea | 1 hurt, $150,000 | no account filed |
| August 2018 | Flash Flood | Victory | $28,300,000 | Heavy rain across the northern portion of Vernon County produced significant flash flooding. Over 200 people were evacuated in Coon Valley because of severe flooding along Coon Creek where U.S. Highway 14 and State Highway 162 were closed. All access into Coon Valley was cut off because of mudslides, washouts and closed roads. Numerous homes were severely damaged with basement walls blown out or had water several feet deep on the first floor. Much of Ontario was covered in flood waters from the Kickapoo River and Brush Creek with almost every business along Garden Street, State Highway 131 and the east end of Main Street sustaining damage. It was estimated that around 75% of the businesses in the entire village sustained some damage. The Ontario police squad car become submerged in flood waters and was destroyed. One boat rental business lost 40 canoes and 48 kayaks. Two campers along the Kickapoo River north of Rockton had to be rescued from flood waters that was neck high. Some residents were evacuated from Viola because of flooding along the Kickapoo River. A total of 350 water rescues were performed across the county. State Highway 131 was closed between Ontario and Rockton because of flood waters from the Kickapoo River where the asphalt was completely removed from the road bed in places or broken in large chunks and then moved up to eight feet from its original location. Numerous roads were closed because of the flooding or from mudslides. Flooding from Timber Coulee Creek washed out over 20 power poles north of Westby. The BNSF rail line was closed because of washouts between Stoddard and the La Crosse County line. The heavy rain and flooding caused two earthen flood control dams to fail and damaged four others. This prompted the evacuation and rescue of residents downstream from the dams, including the communities of Avalanche and Liberty. Wildcat Mountain State Park was closed because of the heavy rain as well. |
| August 2007 | Flash Flood | Stoddard | $28,200,000 | Flash floods and mudslides were reported across the county, with numerous county roads closed and impassable. Areas significantly impacted were from around Stoddard to Viroqua. At least 79 people were evacuated below local dams. Mudslides were especially dangerous along Highway 35 on the west end of the county washing away some homes and closing the highway for quite sometime. Railroad tracks were also damaged knocking over one set of rail cars that had hazardous material stored.||Over 1,100 people applied for FEMA assistance including 33 businesses in the county. |
| April 2026 | Hail | Easton | $26,700,000 | Destructive hail up to baseball sized and strong winds in Westby right before 5pm on April 14th resulted in widespread damage across the entire town and surrounding areas. Roughly 1100 residences in this area sustained roof, window and siding damage with many vehicles having significant damages as well. |
| August 2018 | Flood | Kickapoo Center | $6,500,000 | Runoff from heavy rain created historic flooding along the Kickapoo River in Viola. The river established a new crest of record at 23.72 feet, which was over 9 feet above the flood stage. |
| August 2018 | Flood | Readstown | $4,500,000 | Runoff from heavy rain created historic flooding along the Kickapoo River in Readstown. The river established a new crest of record at 23.17 feet, which was over 12 feet above the flood stage. The flooding continued into early September. |
| August 2007 | Flood | Viroqua | $3,500,000 | Flooding continued along many creeks, streams and rivers. Law enforcement officials reported numerous roads and bridges were either washed out or still under water. All or portions of highways still closed included Highway 35 from Stoddard northward, as well as Highway 131 from Viola to La Farge and from the intersection of Highway 56 and 82 to Viola. |
| June 2000 | Flash Flood | Countywide | $3,500,000 | no account filed |
| June 2008 | Flash Flood | Stoddard | $2,250,000 | The Vernon County sheriff department received numerous calls about water over roads and backed up drainage areas. In fact, law enforcement officials indicated flooding was worse than the flood of August 18-19 2007. Numerous earthen dams in the county had to be monitored for failure, including the Yttri-Primmer Dam that was heavily damaged. Highway 162 had mudslides over it and was closed in sections. At peak, 113 roads were closed across the county. |
| August 2007 | Flash Flood | Coon Vly | $2,000,000 | Car washed away at County Road P and Spring Coulee Road, but people escaped. |
| August 2018 | Flood | La Farge | $1,200,000 | Runoff from heavy rain created historic flooding along the Kickapoo River in La Farge. The river established a new crest of record that was estimated to be 19.42 feet, which was over 7 feet above the flood stage. |
| June 2008 | Flood | La Farge | $1,200,000 | The lower third of the town of La Farge was evacuated and Highway 82 west of town was impassable. |
| June 2008 | Flood | Readstown | $1,000,000 | The Kickapoo River at Readstown crested at a record level of 19.65 feet around 7 a.m. on June 9. The previous record crest of 19.08 feet occurred on July 21, 1951. Flood stage is 12.0 feet. |
| August 2010 | Flash Flood | Trippville | $934,300 | At least 30 roads throughout the county were closed due to high water and washouts. Some of the major roads closed included State Highways 131 and 33 around Ontario, as well as State Highway 162 near Chaseburg. Also, the West Fork Kickapoo River was over the intersection of State Highway 56 and County Road S. |
| June 2008 | Flood | Hillsboro Kckapoo Ar | $900,000 | The South Branch of the Baraboo River at Hillsboro reached a crest of 14.91 feeet around Midnight CDT on June 8th, only to reach a second crest of 16.17 feet around 9 p.m. CDT later that day. This was a record crest for this location. The previous record crest was 15.6 feet on June 29, 1990. Flood stage is 13.0 feet. |
| June 2008 | Flood | Valley | $850,000 | Warner Creek was nearly over a bridge along County Road P, which was closed west of the town of Valley. |
| June 2008 | Flood | Liberty | $800,000 | Highway 56 was closed between Viroqua and Viola due in part to flooding of Bishop Branch. |
| June 2008 | Flood | Hillsboro | $800,000 | Water was reported to be over Highway 80 south of Hillsboro. Unofficially Hillsboro picked up 7.55 inches of rain over the weekend. |
| August 2005 | Tornado (F2) | Liberty | $800,000 | no account filed |
| September 2018 | Flash Flood | Folsom | $750,000 | Runoff from heavy rain caused flash flooding to occur across portions of Vernon County. Several roads were under water around Readstown including County Highway M. In Ontario, evacuations were performed and several roads were closed including County Highways F and P. |
| June 2008 | Flash Flood | La Farge | $750,000 | Highway 131 was closed between La Farge and Ontario due to flash flooding and mudslides. |
| June 2008 | Flood | Ontario | $750,000 | The Kickapoo River at Ontario crested at a record level of 21.96 feet about 9:45 p.m. CDT on June 8. The previous record crest of 18.85 feet occurred on March 14, 2007. Flood stage is 18.0 feet. The river levels actually dipped just below flood stage around 7:00 a.m. CDT on June 8th before rising very quickly back up. Unoffically Ontario picked up 9.84 inches of rain over the weekend. Water swamped the intersection of Highways 33 and 131 and backed up into town. The village's baseball field and nearby parks were submerged along with nearly 3 feet of water into some businesses. |
| June 2008 | Flood | Coon Vly | $750,000 | Highway 162 was closed due to high water. Coon Creek in Coon Valley also flooded and damaged the nearby park. |
| June 2008 | Flood | La Farge | $600,000 | The Kickapoo River at La Farge reached a record crest of 15.88 feet around midnight on June 9. The previous record crest of 14.92 feet occurred on July 1, 1978. Flood stage is 12.0 feet. Unofficially La Farge picked up 6.39 inches of rain over the weekend. The southern and eastern parts of town were hardest hit. |
| June 2013 | Flash Flood | De Soto | $500,000 | Heavy rain produced flash flooding across the southwest sections of Vernon County. High water went over State Highway 162 near Chaseburg. Flash flooding was reported around Genoa where a boulder the size of a dump truck slid off a bluff and on to State Highway 56. Streams that drained into the Kickapoo River around Readstown were out of their banks. |
| June 2008 | Flash Flood | La Farge | $500,000 | A mud slide was reported on Munson Road. |
| August 2010 | Lightning | Springville | $490,000 | Lightning struck a rural church northwest of Viroqua as thunderstorms moved through the morning of August 13th. The area of the church that was struck smoldered for a day before the fire broke out in the afternoon of August 14th. The entire church was destroyed by the fire. |
| July 2017 | Flood | Stoddard | $489,000 | After the initial round of flash flooding, the flood waters continued to cause problems across much of Vernon County into Friday, July 21st. More than 50 roads across the county were closed or impacted by the flood waters. In Coon Valley, the annual Trout Festival had to be cancelled and the American Legion Baseball tournament was moved to an alternate site outside of the county. Numerous homes in Westby had water in their basements. In Ontario, flood waters from the Kickapoo River covered most of the community. Numerous homes had water in their basements and dozens of cars were inundated by the flood waters with one Vernon County Sheriff's Department squad car destroyed. |
| July 2019 | Flash Flood | Mt Tabor | $345,000 | Runoff from heavy rains caused flash flooding to occur along the Kickapoo River and Coon Creek. Campers had to be evacuated from the Kickapoo Valley Reserve. County Road P was covered by a mudslide and flood waters east of Westby. Flood waters also covered County Road P north of Coon Valley. U.S. Highway 14 was closed near Coon Valley when water from Coon Creek covered the road. State Highway 162 from Coon Valley through Chaseburg was closed along with State Highway 56 near Liberty. A bridge was washed out on Spring Coulee Road east of Coon Valley. |
| June 2022 | Tornado (EF1) | La Farge | $300,000 | An EF1 tornado developed east of La Farge and moved northeast along State Highway 82 before dissipating north of White City. A house, farm outbuildings and a couple of campers were damaged along with numerous trees. |
| July 2017 | Flash Flood | Stoddard | $289,000 | Heavy rains, with totals of 6 to 8 inches, produced flash flooding across the central and eastern sections of Vernon County. The headwaters of the Kickapoo River quickly went out of the banks and caused widespread flooding in Ontario. Much of the town was covered in flood waters that prompted State Highways 33 and 131 to be closed. Evacuations were performed east of Westby along Bloomingdale Road, which was closed because of flooding. A mudslide east of Viroqua covered State Highway 56. A rock slide occurred on Mohawk Valley Road north of Stoddard. Water covered County Road P and Spring Coulee Road northeast of Coon Valley and State Highway 162 between Coon Valley and Stoddard. Because of the flooding, campers were evacuated from numerous campgrounds across the county. |
| May 2004 | Flash Flood | Countywide | $250,000 | no account filed |
| June 1996 | Flash Flood | Victory | $250,000 | no account filed |
| June 1980 | Tornado (F2) | not stated | $250,000 | no account filed |
| August 1979 | Tornado (F2) | not stated | $250,000 | no account filed |
| April 1966 | Tornado (F2) | not stated | $250,000 | no account filed |
| May 1964 | Tornado (F2) | not stated | $250,000 | no account filed |
| June 1998 | Thunderstorm Wind | Stoddard | $200,000 | no account filed |
| June 1998 | Thunderstorm Wind | Stoddard | $200,000 | no account filed |
| August 2007 | Flash Flood | Springville | $150,000 | Car washed away on Highway 56, but people escaped. |
| August 2007 | Flood | Readstown | $150,000 | The Kickapoo River at Readstown established the second highest all-time crest of record when it reached 18.82 feet on August 20. Flood stage is 12 feet. |
| May 2004 | Flash Flood | Countywide | $125,000 | no account filed |
| June 1998 | Thunderstorm Wind | Newry | $120,000 | no account filed |
| August 2021 | Flood | Liberty | $100,000 | Runoff from heavy rains pushed the West Fork of the Kickapoo River out of its banks near Liberty. State Highway 56 was reduced to one lane because of the flooding. State Highway 162 was closed in Chaseburg because of flood waters from Coon Creek. Numerous county and township roads and bridges were also impacted or closed from flooding. |
| June 1998 | Tornado (F1) | Retreat | $100,000 | no account filed |
| June 1998 | Thunderstorm Wind | Hillsboro | $90,000 | no account filed |
| July 2024 | Thunderstorm Wind | Hillsboro | $75,000 | Emergency management reported trees and power lines down in Hillsboro. |
| May 2024 | Thunderstorm Wind | Hillsboro | $75,000 | Emergency management reported trees down on homes in Hillsboro. |
| June 2019 | Lightning | Esofea | $75,000 | A home southeast of Coon Valley was struck by lightning with the resulting fire destroying the entire structure. |
| June 1998 | Thunderstorm Wind | Westby | $60,000 | Roof blown off bowling alley |
| May 2000 | Flash Flood | Countywide | $60,000 | no account filed |
| May 2024 | Thunderstorm Wind | Genoa | $50,000 | Emergency Management reported power lines down on Highway 35 and 56. |
| July 1994 | Thunderstorm Wind | Viola | $50,000 | no account filed |
Block
