Heads up! Small hail spotted in these regions: Las Cruces, NM • El Paso, TXATTENTION! Damaging hail detected. Hail tracking is now active for this region: Champaign, ILHeads up! Small hail spotted in these regions: Las Cruces, NM • El Paso, TXATTENTION! Damaging hail detected. Hail tracking is now active for this region: Champaign, IL
Hi folks! Stay ahead of the storm with a 48-hour severe weather outlook, precise hail alerts, and live hail tracking. Access hail insights, historical hail maps, and detailed reports across 300+ regions for better planning and fewer "uh-oh" moments. Stay informed, stay safe, and stay protected - all completely free. Hi folks! Stay ahead of the storm with a 48-hour severe weather outlook, precise hail alerts, and live hail tracking. Access hail insights, historical hail maps, and detailed reports across 300+ regions for better planning and fewer "uh-oh" moments. Stay informed, stay safe, and stay protected - all completely free.
NOAA/NWS STORM PREDICTION CENTER REPORTS + U.S. CENSUS DATA
Hail, Wind & Tornado Reports in Monona County, IA
Public hail, wind, and tornado reports across Monona County, IA from May 26, 1958 through May 18, 2026, sourced from NOAA/NWS Local Storm Reports and SPC storm report data.
Example: 51545 — search hail, wind and tornado public reports for any U.S. ZIP code
Hail Reports
143
Wind Reports
138
Tornado Reports
29
Max Hail Size
3.50″
Source NOAA SPC · NWS Local Storm ReportsCoverage Monona County, IA · 1958–presentUpdated Daily · last May 18, 2026
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Blencoe, IA
1.50″hail
Mar 7, 2026 2:40 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 W Blencoe, IA
3.50″hail
Jun 13, 2024 12:31 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: Report from mPING: Baseball++ (3.50 in.).
NWS Hail Report Location: 3 W Onawa, IA
2.75″hail
Jun 13, 2024 12:14 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: The office received a photo of significant damage to siding and windows on a home in Whiting... Iowa. This was accompanied by significant car damage and tree damage in the surrounding area. Hail was estimated to have ranged from golf ball to baseball size.
NWS Hail Report Location: Whiting, IA
1.75″hail
Jun 12, 2024 11:51 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: Golf ball sized hail along Interstate 29 west of Whiting.
NWS Hail Report Location: 3 W Whiting, IA
1.00″hail
May 21, 2024 6:28 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: Report from mPING: Quarter (1.00 in.).
NWS Hail Report Location: Blencoe, IA
1.00″hail
May 9, 2023 12:29 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: MONONA COUNTY DISPATCH RELAYED REPORT FROM OFFICER IN MAPLETON OF PEA TO QUARTER SIZED HAIL.
NWS Hail Report Location: Mapleton, IA
1.00″hail
Apr 20, 2023 12:00 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: TRAINED SPOTTER REPORTED QUARTER SIZED HAIL COVERING THE GROUND IN UTE.
NWS Hail Report Location: Ute, IA
1.50″hail
Apr 19, 2023 11:28 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Blencoe, IA
1.00″hail
Apr 19, 2023 11:10 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: REPORT FROM MPING: QUARTER (1.00 IN.).
NWS Hail Report Location: 4 S Turin, IA
1.00″hail
May 20, 2022 4:28 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: HAIL UP TO AROUND THE SIZE OF A QUARTER. HALF AN INCH OF RAIN.
NWS Hail Report Location: 6 ENE Mapleton, IA
1.50″hail
Jul 9, 2021 6:09 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: RELAYED TO EM FROM DEPUTIES.
NWS Hail Report Location: Onawa, IA
1.00″hail
Jun 3, 2020 2:45 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 ENE Mapleton, IA
1.00″hail
Jun 21, 2019 8:30 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: Whiting, IA
1.00″hail
Jun 21, 2019 12:45 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: DELAYED REPORT. TIME ESTIMATED BASED ON RADAR DATA.
NWS Hail Report Location: 2 SE Turin, IA
1.00″hail
Jun 7, 2018 1:12 AM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 3 NW Mapleton, IA
1.50″hail
Sep 15, 2016 11:23 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1 SW Blencoe, IA
1.75″hail
Jul 7, 2016 9:40 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: HAIL UP TO GOLFBALL SIZE REPORTED BY SHERIFF. 3 TO 4 MILES SOUTH OF ONAWA.
NWS Hail Report Location: 4 S Onawa, IA
1.00″hail
Apr 24, 2016 9:40 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 5 NE Whiting, IA
1.00″hail
Apr 24, 2016 9:15 PM UTC
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 4 N Whiting, IA
1.00″hail
Jun 29, 2014 6:19 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: N Soldier, IA
1.00″hail
Jun 16, 2014 10:40 AM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: N Blencoe, IA
1.00″hail
Jun 5, 2014 3:40 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: Winds were gusting to around 50 mph.
NWS Hail Report Location: 2.92 SE Blencoe, IA
1.00″hail
Jul 8, 2013 2:35 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: Thunderstorm winds accompanying the storm also downed some tree branches in the area.
NWS Hail Report Location: 2.91 NE Whiting, IA
1.00″hail
Aug 16, 2012 12:56 AM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .51 E Mapleton, IA
1.00″hail
May 23, 2012 5:36 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: Hail up to quarter-size fell south of Onawa.
NWS Hail Report Location: 4 S Onawa, IA
1.00″hail
May 23, 2012 5:34 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: N Blencoe, IA
1.00″hail
May 19, 2012 6:25 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .86 NE Onawa, IA
1.00″hail
May 19, 2012 6:05 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: .51 E Onawa, IA
1.00″hail
Mar 30, 2012 4:50 PM CST-6
Hail report for Monona County, IA
Monona County · 3,715 Homes in County
Hail Report Description: No National Weather Service description provided.
NWS Hail Report Location: 1.47 NNE Mapleton Muni Arpt, IA
Showing 15 of 30
Hail Damage Risk for Your Home+
Hail reports describe hail by diameter, often comparing stone size to familiar objects like peas, quarters, golf balls, and softballs. Use this guide as a starting point for possible hail damage to your roof, siding, gutters, vents, windows, and exterior. Actual hail damage depends on hail hardness, density, wind speed, impact angle, roof age, shingle condition, roof pitch, roofing material, installation quality, and prior storm damage.
Pea
0.25″
Low
Usually too small to cause hail damage to most sound asphalt roofs, siding, or gutters.
Mothball
0.50″
Sub-Severe Watch
Below the NWS severe-hail threshold, but not always harmless. Repeated small hail can scuff surfaces, wear aging shingles, and loosen protective granules over time.
Penny
0.75″
Minor / Watch
Below the NWS severe-hail threshold, but roof hail damage is still possible on older, brittle, poorly installed, or previously damaged shingles. May also mark screens, vents, gutters, and soft metal.
Nickel
0.88″
Minor / Watch
Still below the severe-hail threshold, but large enough to leave visible marks on soft metal and add wear to older or hail-weakened roof shingles.
Quarter
1.00″
Watch
The NWS severe-hail threshold. Quarter-size hail can bruise shingles, dent soft metal, and create roof hail damage worth checking.
Half Dollar
1.25″
Watch
More likely to dent gutters, vents, flashing, and siding. Hail damage risk rises quickly on older roofs or hail-weakened shingles.
Ping Pong / Walnut
1.50″
Likely
Hail damage becomes more likely, including bruised shingles, granule loss, dented siding, and damaged roof vents.
Golf Ball
1.75″
Likely
Often causes roof hail damage, cracked shingles, dented gutters, damaged flashing, and siding impacts. A roof inspection is recommended.
Hen Egg
2.00″
Serious
Can crack or puncture shingles, expose mat, dent siding, and cause widespread hail damage across the roof and exterior.
Tennis Ball
2.50″
Serious
Can cause heavy roof hail damage, punctured siding, broken skylights, damaged vents, and widespread exterior damage.
Baseball
2.75″
Major
Major hail damage is likely, including severe roof impacts, damaged siding, broken windows, and possible major roof repairs.
Tea Cup / Large Apple
3.00″
Major
Can cause heavy hail damage across the roof, siding, gutters, windows, and exterior. Significant repairs are often needed.
Softball
4.00″
Extreme
Destructive hail damage. Can severely damage roofing materials, siding, windows, gutters, vents, vehicles, and exterior surfaces.
Grapefruit
4.50″
Extreme
Catastrophic hail damage risk for roofs, windows, vehicles, siding, gutters, and exterior surfaces.
Source: NOAA / National Weather Service hail size references are used for hail-size comparisons and the 1.00″ severe-hail threshold. Damage descriptions are general homeowner guidance, not official NOAA/NWS damage ratings. Sub-severe hail under 1.00″ is below the severe threshold, but that does not mean “no roof damage.” Penny- to nickel-size hail can still contribute to granule loss, cosmetic surface marks, and added wear, especially on older, brittle, poorly installed, or previously damaged roofs.
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 5 NW Whiting, IA
83mph
May 24, 2024 7:46 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: From a personal weather station.
NWS Wind Report Location: 6 WEST Castana, IA
59mph
Jul 12, 2023 11:00 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: From a personal weather station.
NWS Wind Report Location: 3 SSW Blencoe, IA
UNKmph
Jul 24, 2022 1:33 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: TREES AND BRANCHES DOWN. TIME ESTIMATED FROM RADAR.
NWS Wind Report Location: Moorhead, IA
70mph
Jul 11, 2022 8:15 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: PUBLIC REPORTED VIA SOCIAL MEDIA A DOWNED 12 INCH DIAMETER TREE BRANCH THAT FELL THROUGH A WINDOW.
NWS Wind Report Location: Soldier, IA
UNKmph
May 13, 2022 12:51 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: TREES UPROOTED OR SNAPPED.
NWS Wind Report Location: Whiting, IA
UNKmph
May 13, 2022 12:49 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN.
NWS Wind Report Location: Whiting, IA
UNKmph
May 13, 2022 12:17 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: REPORT FROM MPING: 1-INCH TREE LIMBS BROKEN; SHINGLES BLOWN OFF.
NWS Wind Report Location: 3 W Whiting, IA
UNKmph
Jul 11, 2020 6:30 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: TREES BLOWN DOWN. WINDS ESTIMATED 50-60 MPH.
NWS Wind Report Location: Blencoe, IA
59mph
Jun 19, 2018 12:11 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: 7 NW Whiting, IA
UNKmph
Jun 2, 2018 5:15 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: SEMI BLOWN OVER ON I29.
NWS Wind Report Location: 3 SSW Blencoe, IA
63mph
Aug 11, 2016 11:21 PM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: IOWA DEPARTMENT OF TRANSPORTATION OBSERVATION.
NWS Wind Report Location: 3 N Pelican Point State, IA
60mph
Jul 12, 2016 1:32 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: No National Weather Service description provided.
NWS Wind Report Location: Mapleton, IA
UNKmph
Jul 6, 2016 3:40 AM UTC
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: NUMEROUS TREES AND POWER LINES DOWN IN TOWN
NWS Wind Report Location: Mapleton, IA
60mph
Aug 9, 2015 9:53 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Numerous large tree limbs were reported blown down in town.
NWS Wind Report Location: N Soldier, IA
60mph
Jul 8, 2013 3:20 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts estimated at 60 mph downed several large tree branches in the area.
NWS Wind Report Location: 2.91 NE Albaton, IA
69mph
May 29, 2013 7:10 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: The brick front of a building facet at a car dealership was blown off and fell onto a couple of automobiles.
NWS Wind Report Location: .51 E Onawa, IA
63mph
May 23, 2012 6:00 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts estimated at over 60 mph downed trees and power lines near Ute.
NWS Wind Report Location: 1.24 NW Ute, IA
60mph
Aug 18, 2011 1:16 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: The public estimated that thunderstorm wind gusts reached around 60 mph.
NWS Wind Report Location: .51 E Mapleton, IA
60mph
Jun 26, 2011 7:35 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts were estimated at around 60 mph by a spotter about 10 miles east of Onawa.
NWS Wind Report Location: 3.78 SSE Castana, IA
63mph
Jun 26, 2011 7:34 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts estimated at over 60 mph downed trees in the Onawa area which blocked a few roads. Torrential rain also caused some brief street flooding in town.
NWS Wind Report Location: .51 E Onawa, IA
60mph
Jun 26, 2011 6:45 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts were estimated at around 60 mph a little north of the Onawa area.
NWS Wind Report Location: 2.81 N Onawa, IA
69mph
Jun 20, 2011 8:05 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts estimated at around 70 mph blew over a semi on Highway 141 and also blew a grain bin across the highway southwest of Mapleton. The winds also downed trees and power lines in the Mapleton area and caused scattered building damage.
NWS Wind Report Location: 1.12 S Mapleton, IA
69mph
Jun 20, 2011 7:43 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts estimated at around 70 mph downed trees and power lines in the Blencoe area. Some of the fallen trees also caused house damage in town.
NWS Wind Report Location: N Blencoe, IA
63mph
Aug 8, 2010 7:45 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts estimated at over 60 mph caused considerable tree damage in the Whiting area which damaged a few buildings. The winds also broke at least one center pivot in the area.
NWS Wind Report Location: N Whiting, IA
58mph
Jul 14, 2010 5:25 PM CST-6
Wind report for Monona County, IA
Monona County · 3,715 Homes in County
Wind Report Description: Thunderstorm wind gusts around 60 mph knocked a large tree down blocking a road in Onawa. The winds also blew down power lines trapping a traveler on a highway near town for a while until electrical crews could move the lines.
NWS Wind Report Location: N Onawa, IA
Showing 15 of 30
Wind Damage Risk for Your Home+
Storm reports list thunderstorm wind gusts in mph. The NWS marks storms as severe at 58+ mph, but wind damage to your home depends on roof age, shingle condition, installation, exposure, nearby trees, and prior hail or wind damage.
Below Severe
Under 58 mph
Minor
Usually little damage to a sound roof, but loose shingles, flashing, or debris may shift.
Severe
58–74 mph
Watch
Can loosen shingles, lift flashing, break limbs, and damage gutters, siding, fences, or trim.
Damaging
75–90 mph
Serious
Can peel shingles, damage vents, tear siding, rip gutters, and expose weak roof areas.
Extreme
90+ mph
Major
Can cause major roof covering loss, tree damage, broken windows, and structural damage.
Source: NOAA / National Weather Service storm reports. Gusts may be measured or estimated; actual wind damage varies by roof condition, exposure, and prior hail or wind damage.
Latest NWS Tornado Reports in Monona County
29 reports
UNKcategory
Apr 26, 2024 10:23 PM UTC
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: An EF1 tornado developed near the intersection of 260th and 270th Streets. It produced damage to outbuildings at a farmstead near the intersection... and tossed some fiberglass boats. The tornado moved across agricultural fields generally northeast paralleling State Highway 183 to the west. It produced damage to trees along Redwood Avenue and snapped a power pole near the intersection of State Highway 37 and Redwood Avenue. The tornado moved just west of the community of Soldier... producing no discernable damage to any homes in businesses on the west side of Soldier. Radar signatures indicate the tornado continued to move northeast across agricultural lands... moving north of 245th Street... damaging trees and outbuildings... before dissipating just east of Spruce Avenue. This tornado was on the ground for 3.3 miles.
NWS Tornado Report Location: 2 WSW Soldier, IA
UNKcategory
Apr 26, 2024 10:17 PM UTC
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: A short-lived tornado developed in an agricultural field and moved generally northeast across fields and pastureland... damaging outbuildings of farmsteads near the intersection of 280th and Poplar Roads. The tornado appeared to dissipate in pastureland before reaching State Highway 183. This makes the length of the tornado path 1.48 miles.
NWS Tornado Report Location: 2 SW Soldier, IA
UNKcategory
Apr 26, 2024 10:05 PM UTC
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: 3 NNE Pisgah, IA
EF2category
Oct 4, 2013 5:02 PM CST-6
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: This tornado continued from Thurston County in northeast Nebraska and into Monona County. The damage in Monona County was generally confined to soft wood trees, but one farmstead did receive minor out building damage. The EF2 damage occurred as the tornado crossed 100th street were several power poles were snapped off at the base. The tornado then exited Monona County into Woodbury County.
NWS Tornado Report Location: 2.4 SW Albaton, IA
EF0category
Apr 14, 2012 1:28 PM CST-6
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: A brief tornado touchdown was caught on film northwest of Castana. The tornado did no apparent damage.
NWS Tornado Report Location: 1.99 SSW Grant Center, IA
EF1category
Jun 20, 2011 7:45 PM CST-6
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: A NWS storm survey determined a tornado tracked around 7 miles southeast of the Turin area. The tornado touched down near county roads E60 and L14 producing sporadic tree damage. The tornado tracked north northeast hitting a farmstead along L14 uprooting trees, downing power lines and destroying a grain bin. The tornado then moved across the Loess Hills producing varying degrees of tree damage. After crossing county roads E54 and 277th street additional tree and farm outbuilding damage occurred. Part of a roof of a farm house was removed near 258th Street with outbuildings also damaged in that area. The tornado knocked down some power lines near county road L16 before lifting in that area. The average path width was determined to be around 300 yards.
NWS Tornado Report Location: 5.41 WSW Moorhead, IA
EF3category
Apr 9, 2011 6:20 PM CST-6
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: A tornado caused extensive damage in the Mapleton area with about 100 houses destroyed and many others severely damaged in a 12 to 15 block area on the southwest side of town. This caused the displacement of around 500 to 600 people. Most garages and stand alone structures were destroyed. In addition, large trees were uprooted and windows blown out of vehicles. Twelve to 14 people sustained minor injuries, the most severe a broken leg. The worst property damage was noted to be on the lower end of the EF3 category. The tornado started about 2 miles west southwest of Mapleton, moved into town, then turned north and ended 1 mile north of town. The path length was around 3.5 miles and the maximum width was around 3/4 of a mile.
NWS Tornado Report Location: 1.84 SW Mapleton, IA
EF0category
Jun 11, 2008 6:20 PM CST-6
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: A brief tornado touched down 6 miles northeast of Castana causing mainly just tree damage.
NWS Tornado Report Location: 3.16 SSW Mapleton, IA
EF3category
Jun 11, 2008 5:36 PM CST-6
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: This tornado tragically hit a boyscout camp north of Little Sioux Iowa killing 4 young scouts. The tornado initially touched down in Burt county Nebraska, crossed into Harrison county Iowa near mile marker 97 on Interstate 29, and then finally crossed into Monona county Iowa about 4 miles north of Little Sioux. In Monona county the tornado entered the Little Sioux Scout Ranch, destroying the rangers home near the entrance of the park giving it a rating of EF3. The storm then blew down trees and destroyed bunk houses at the camp. Four scouts were killed in one bunk house when a brick chimney collapsed on them. In total 48 people were injured at the camp. The tornado continued to topple trees as it tracked into Preparation Canyon State Park. Just before it entered the park a farmstead sustained damage. The tornado hit another farmstead about 2.5 miles southwest of Moorhead where trees were blown down and sheds damaged. The tornado then began to weaken and finally lifted about 2 miles southwest of Moorhead. The total path length was around 14 miles.
NWS Tornado Report Location: 5.53 SE Blencoe, IA
EF1category
May 29, 2008 7:00 PM CST-6
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: This tornado initially touched down in a grove of trees in a rural area southwest of Moorhead. As it tracked east it hit a farmstead causing house and outbuilding damage and also severely damaged a grove of walnut trees. Before the tornado lifted, it damaged two other separate groves of cottonwood trees and snapped a 3 foot diameter oak tree at its base and damaged a chicken coop at another farmstead. The path width of the tornado damage was generally less than 100 yards, although it reached a maximum width of around 200 yards.
NWS Tornado Report Location: 4.02 SSW Moorhead, IA
F0category
Aug 17, 2001 6:47 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: This tornado touched down east of Macy, Nebraska, on the Iowa side of the Missouri River. This was the second tornado producing supercell to track across Monona county this night, touching down in open country with no apparent damage. The tornado was first reported by law enforcement and was also caught on film by a tv meteorologist. Initially the location was reported as Macy, Nebraska, but after further radar reviews, along with accounts from storm chasers at the scene, it was determined the tornado touched down west of Whiting, Iowa, or several miles east of Macy.
NWS Tornado Report Location: 5 W Whiting, IA
F0category
Aug 17, 2001 5:39 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: A tornado touched down northwest of Onawa overturning a center pivot irrigation system according to a law enforcement official. The tornado was also captured on film from someone staying at the Lewis and Clark State Park. All of the pictures taken showed that the condensation portion of the tornado was very narrow. The path of the tornado crossed I-29 before lifting around 2 miles north northwest of Onawa.
NWS Tornado Report Location: 5 NW Onawa, IA
F0category
Jun 13, 2001 8:20 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: A brief touchdown of a tornado in open country in extreme northwest Monona county, reported by the public.
NWS Tornado Report Location: 6 NNW Whiting, IA
F1category
May 16, 1999 2:33 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: Two homes sustained moderate to major damage, 3 grain bins and other outbuildings destroyed. Several vehicles were carried some distance. Large tree uprooted.
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: 5 NNW Whiting, IA
F2category
Jun 23, 1998 6:30 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: House destroyed.
NWS Tornado Report Location: 7 NW Whiting, IA
F0category
May 21, 1998 7:30 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Castana, IA
F0category
Jun 16, 1992 10:01 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F2category
May 28, 1991 12:56 AM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F0category
Jul 5, 1987 5:20 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F4category
Jul 28, 1986 7:11 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
UNKcategory
Aug 15, 1977 4:00 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
UNKcategory
Jun 24, 1968 6:35 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
UNKcategory
Jun 24, 1968 6:35 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1category
Jun 8, 1967 9:30 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F2category
Sep 9, 1965 1:00 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1category
Sep 9, 1965 12:30 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
F1category
May 18, 1962 5:00 PM CST
Tornado report for Monona County, IA
Monona County · 3,715 Homes in County
Tornado Report Description: No National Weather Service description provided.
NWS Tornado Report Location: Not provided, IA
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Tornado Damage Risk for Your Home+
After a tornado, the National Weather Service assigns an EF rating from EF0 to EF5 based on surveyed damage. The rating estimates wind speed from what the tornado damaged, so actual damage can vary by construction quality, roof age, garage doors, windows, trees, debris, and how close the home was to the tornado path.
EF0
65–85 mph
Light
Can peel shingles, damage gutters or siding, break tree limbs, and toss loose outdoor items.
EF1
86–110 mph
Moderate
Can strip roof covering, damage exterior doors, break windows, snap trees, and cause heavier siding or gutter damage.
EF2
111–135 mph
Serious
Can tear off large sections of roofing, break or uproot trees, destroy weaker structures, and cause major exterior damage.
EF3–EF5
136+ mph
Severe
Can remove roofs and walls, destroy large portions of homes, toss vehicles, and cause severe to total destruction near the path.
Source: NOAA / National Weather Service. EF ratings are assigned after a post-storm damage survey and are based on observed damage, not a direct measurement at every home.
NWS Hail, Wind and Tornado Reports in Monona County on the Interactive Map
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Hail
Wind
Tornado
Get a free hail report for your address
Address-level hail history. 100% free. No phone or email required.
This snapshot is for local area context only and describes the selected state, county, city, or ZIP area — not a specific home or property. For ZIP-level estimated hail impact, use Free Hail Maps to generate a hail report with key impact details for that ZIP.
Top ZIP Codes with NWS Storm Reports in Monona County
Not sure if hail may have affected your home in Monona County? Ask a local pro for a Remote Hail Inspection. They can review hail activity for your property and help you decide whether an in-person roof or exterior inspection makes sense.
How many hail, wind, and tornado reports does Monona County have on record?
Our records show 143 hail, 138 wind, and 29 tornado reports in Monona County, compiled from NOAA SPC and NWS Local Storm Reports. The most recent was reported on May 18, 2026.
What is the largest hail ever reported in Monona County?
The largest hail size in these storm-report records in Monona County is 3.50″. It was reported near Onawa, IA on June 13, 2024.
A storm report showed up near my home in Monona County — does that mean my roof is damaged?
Not necessarily. A storm report only means hail, wind, or a tornado was observed nearby; it does not confirm damage at any specific address, and conditions change from block to block. Check an address-level hail report first, and if it looks significant, find a local pro that serves Monona County and ask about a Remote Hail Inspection before anyone climbs on the roof.
I am buying a home in Monona County — why should I look at its storm history?
Recent hail or wind can leave a roof or exterior with damage that is easy to miss during a walkthrough, and a recent roof replacement is sometimes an insurance job after a storm. Reviewing the storm history for a Monona County address before closing helps you ask informed questions about roof age, past repairs, and any prior claims.
I am selling a home in Monona County — how does this help me?
Knowing the storm history for your address lets you answer buyer questions with confidence, document repairs you have already made, and decide whether a pre-listing roof check is worthwhile. A clear hail history removes a common sticking point during negotiations.
How do I check hail history for a specific Monona County address?
Use the address search to pull a free address-level hail report for any property in Monona County — no phone number or email required. It shows recent hail activity for that address so you know whether a closer roof or exterior review makes sense.
Where does this storm report data come from, and what are its limits?
Storm reports on this page are public reports from storm events across Monona County, IA, sourced from NOAA SPC and NWS Local Storm Reports. They show where hail, wind, or tornado activity was reported in Monona County, but they do not confirm damage at any specific property. Report locations, sizes, and times may be approximate and can vary from what an individual home experienced. For property-specific hail history, use an address-level hail report or contact a participating local professional for a remote hail inspection. Pros inclusion is not an endorsement, and contacting a professional does not confirm damage at any property.
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