The U.S state of Iowa experiences multiple tornadoes every year. There have been at least 3,422 recorded tornadoes since 1950. At least 2,340 people have been injured, and 100 people have died due to these tornadoes. [1] There have been multiple tornadoes before 1950, but most of them are not recorded accurately or at all, but the most violent and deadliest tornadoes before 1950 have been recorded. The deadliest tornado was the Camanche tornado, which killed 72 people in Iowa. [2]
2024 was a record-breaking year in Iowa. Iowa saw 125 tornadoes in 2024 which beat the previous record of 120 tornadoes in 2004. In April and May alone, Iowa saw 98 tornadoes, giving the months of April 2024 and May 2024 the second and third most tornadoes in a month, just before May 2004 which saw 57 tornadoes. [3]
The most tornado-prone parts of Iowa are in the northeastern counties. The counties of Delaware, Black Hawk, Buchanan, Linn, and Benton on average have seen at least one strong tornado each year from 1953 to 2008. [4]
A tornado is a violent column of air that extends from a thunderstorm to the ground. Although tornadoes can happen at any time of the year, the most popular time for tornadoes to form in Iowa is early in the spring. [5] Iowa is in the central plains, where the Rocky Mountains to the west and the Appalachian Mountains to the east meet. This unique geography creates a funneling effect, channeling warm, moist air from the Gulf of Mexico and cool, dry air from Canada. [6] These are the most ideal conditions for tornadoes to form, with Iowa being caught inside of Tornado Alley, along with other Great Plains states, greatly increasing the chances of a tornado to form in Iowa. [7]
Date | Tornadoes |
---|---|
May 2004 | 57 |
April 2024 | 49 |
May 2024 | 49 |
June 1984 | 48 |
June 2008 | 48 |
April 2001 | 40 |
June 1990 | 36 |
August 2014 | 36 |
May 1998 | 34 |
June 2001 | 34 |
June 2014 | 31 |
June 2004 | 28 |
Date | Tornadoes |
---|---|
August 31, 2014 | 35 |
April 11, 2001 | 28 |
June 11, 2004 | 24 |
May 8, 1988 | 22 |
June 7, 1984 | 21 |
July 19, 2018 | 21 |
May 22, 2004 | 20 |
April 9, 2011 | 20 |
November 11, 2015 | 19 |
June 1, 2001 | 18 |
March 6, 2017 | 18 |
The Enhanced Fujita Scale, or EF Scale, is used to assign a tornado a rating based on estimated wind speeds and related damage. When tornado-related damage is surveyed, it is compared to a list of damage indicators and degrees of damage, which help estimate better the range of wind speeds the tornado likely produced. From that, a rating from EF0 to EF5 is assigned. [9] From 1974-2007, the Fujita Scale was used to calculate the strength of a tornado. [10] This system had calculated the strength based on the damage delt to well-built wooden homes. [11] Torandoes recorded before 1974 were examined and rated accordingly. Multiple flaws including a lack of damage indicators, difference in opinion from evaluators, and no calibration of damage with relation to wind speed caused researchers from Texas Tech University to re-examine and re-do the Fujita Scale. A group of wind data experts met in 2001 and came up with 28 new damage indicators which included poles, trees, and other buildings other than just wooden frame homes. After discussion, the National Weather Service officially adopted the new scale in 2007. [12]
EF Rating | Wind Gust Speed (mph) |
---|---|
0 | 65-85 |
1 | 86-110 |
2 | 111-135 |
3 | 136-165 |
4 | 166-200 |
5 | Over 200 |
FU | F0 | F1 | F2 | F3 | F4 | F5 | Total | |
---|---|---|---|---|---|---|---|---|
11 | 0 | 1 | 67 | 32 | 27 | 4 | 142 | |
Deaths: >540 | Injuries: >2,186 |
A total of 142 recorded tornadoes touched down in Iowa before 1900. At least 540 people died and 2,186 people were injured due to these tornadoes before 1900. There have been 63 intense tornadoes with a rating of F3+, the deadliest of which was on June 3, 1860, in Camanche, killing 92. This time period for tornadoes in Iowa is the deadliest period of tornadoes in Iowa, with each recorded tornado killing on average 3.48 people. The first use of a tornado warning in the United States wasn't until March 25, 1948. [13] This caused tornadoes before the 1950s to be more dangerous, because people thought that tornadoes would be too rare to strike a region so there was no point in issuing warnings. [14]
On June 3, 1860, an F4 tornado touched down north of Bennett, moving across eastern Iowa, killing 20 people in rural Clinton County. It then ripped through Camanche, destroying almost every building in the town and killing 41. A raft carrying 26 was hit by the tornado and flipped, killing all but 3 men. The tornado caused an estimated $250,000 - $300,000 in damages. [15]
On June 17, 1882, two tornadoes formed and intersected in Grinnell forming one tornado at F5 intensity. [16] It travelled across central Iowa, killing a total of 68 people. 10 people died near Rippey, 7 people died in Jasper County, 39 in Grinnell, and 10 in Malcolm. [17]
On July 6, 1893, an F5 tornado touched down northwest of Quimby, moving toward the town of Pomeroy. With a damage path 500 yards (460 m) wide and 55 miles (89 km) long, the tornado destroyed about 80% of the homes in Pomeroy. The tornado killed 71 people and injured 200. [18]
F# | Date | Deaths | Injuries | Start location | County | Path length | Max width |
---|---|---|---|---|---|---|---|
F4‡† | June 3, 1860 | 92 | 200 | N of Bennett | Cedar | 81.2 miles (mi) (130.68 kilometers (km)) | 1000 yards (yds) (914.4 meters (m)) |
F4 | June 18, 1871 | 0 | 5 | S of Superior | Dickinson | Unknown | Unknown |
F3 | 2 | 20 | Glidden | Carroll | 11.6 mi (18.67 km) | Unknown | |
F4 | May 22, 1873 | 8 | 30 | S of Hayesville | Keokuk | 41.7 mi (67.1 km) | 800 yds (731.52 m) |
F3 | April 11, 1876 | 3 | 30 | SE of Eagle Grove | Wright | 27.5 mi (44.26 km) | Unknown |
F4 | April 18, 1878 | 1 | 2 | W of Atlantic | Cass | Unknown | Unknown |
F4 | April 21, 1878 | 17 | 29 | S of Charter Oak | Crawford | 69.1 mi (111.21 km) | 800 yds (731.52 m) |
F4 | 10 | 40 | SW of Battle Creek | Ida | 32.5 mi (52.3 km) | 200 yds (182.88 m) | |
F3 | June 1, 1878 | 2 | 7 | SW of Adair | Adair, Guthrie | 12.1 mi (19.47 km) | Unknown |
F3 | 2 | 7 | E of Marble Rock | Floyd | Unknown | 400 yds (365.76 m) | |
F4 | 3 | Unknown | Rockwell | Cerro Gordo | Unknown | Unknown | |
F4 | July 2, 1879 | 2 | 0 | S of Carnes | Sioux | 4.6 mi (7.4 km) | Unknown |
F3 | April 18, 1880 | 0 | 2 | Missouri/Iowa border | Davis County | 15 mi (24.14 km) | 150 yds (137.16 m) |
F3 | 0 | 0 | Bloomfield | Davis County | 8 mi (12.87 km) | 200 yds (11.77 m) | |
F4 | June 9, 1880 | 7 | 20 | SW of Macedonia | Pottawattamie | 15.1 mi (24.3 km) | 500 yds (457.2 m) |
F4 | June 11, 1881 | 2 | 6 | S of Norwalk | Warren | 30.1 mi (48.44 km) | 300 yds (274.32 m) |
F3 | 1 | 8 | NW of Britt | Hancock | 10 mi (16.09 km) | 50 yds (45.72 m) | |
F3 | June 12, 1881 | 0 | 10 | NE of Adair | Guthrie | 10 mi (16.09 km) | 200 yds (182.88 m) |
F4 | June 28, 1881 | 3 | 20 | N of Quimby | Cherokee | 10 mi (16.09 km) | 400 yds (365.76 m) |
F3 | September 26, 1881 | 0 | 7 | NE of Postville | Fayette, Clayton, Allamakee | 6 mi (9.66 km) | 200 yds (182.88 m) |
F3 | April 8, 1882 | 0 | 3 | W of Ames | Story | 12 mi (19.2 km) | 100 yds (91.44 m) |
F4 | June 17, 1882 | 1 | 5 | W of Ogden | Boone | 33 mi (53.1 km) | 200 yds (182.88 m) |
F5 | 68 | 300 | Cooper | Greene | 109.4 mi (176.06 km) | 800 yds (731.52 m) | |
F4 | June 21, 1882 | 5 | 50 | NW of Primghar | O'Brien | 21.4 mi (34.44 km) | 800 yds (731.52 m) |
F3 | October 30, 1882 | 2 | 6 | E of Davenport | Scott | 10 mi (16.09 km) | 600yds (548.64 m) |
F4 | April 21, 1883 | 2 | 10 | N of Woodbine | Harrison | 10.1 mi (16.25 km) | 150 yds (137.16 m) |
F3 | June 11, 1883 | 0 | 8 | SW of Elkport | Clayton | 10 mi (16.09 km) | 100 yds (91.44 m) |
F3 | July 4, 1884 | 0 | 0 | N of Hubbard | Hardin | 3 mi (4.83 km) | 70 yds (64 m) |
F4 | June 12, 1885 | 3 | 10 | S of Bloomfield | Davis | 10.1 mi (16.25 km) | 200 yds (182.88 m) |
F3 | 0 | 13 | W of Fairview | Monona | 14 mi (22.53 km) | 300 yds (274.32 m) | |
F4 | April 14, 1886 | 3 | 18 | S of Griswold | Cass | 54.5 mi (87.71 km) | 400 yds (365.76 m) |
F3 | 0 | 5 | SW of Thurman | Fremont, Mills, Montgomery, Pottawattamie | 45 mi (72.42 km) | 100 yds (91.44 m) | |
F3 | 0 | 15 | NW of Bedford | Taylor, Adams | 20 mi (32.19 km) | 200 yds (182.88 m) | |
F3 | July 4, 1890 | 0 | 40 | SW of Dawson | Hardin | 10 mi (16.09 km) | 200 yds (182.88 m) |
F3‡ | 0 | 18 | SW of Chester | Howard, Fillmore County, Minnesota | 10 mi (16.09 km) | 150 yds (137.16 m) | |
F3 | 0 | 2 | NW of Vincent | Webster, Humboldt, Wright | 5 mi (8.05 km) | 200 yds (182.88 m) | |
F3 | June 22, 1892 | 1 | 8 | E of Nashua | Chickasaw, Bremer | 15 mi (24.14 km) | 400 yds (365.76 m) |
F3‡ | April 11, 1893 | 3 | 16 | SW of Stanberry, Missouri | Gentry County, Missouri, Worth County, Missouri, Ringgold | 35 mi (56.33 km) | 300 yds (274.32 m) |
F5 | July 6, 1893 | 71 | 200 | NW of Quimby | Cherokee, Buena Vista,Pocahontas, Calhoun | 57.6 mi (92.7 km) | 500 yds (457.2 m) |
F4 | May 5, 1894 | 1 | 5 | N of Walnut City | Appanoose, Davis | 32.7 mi (52.6 km) | 200 yds (182.88 m) |
F3 | September 21, 1894 | 3 | Unknown | S of Emmetsburg | Palo Alto | 12.6 mi (20.28 km) | Unknown |
F4 | 25 | 60 | N of Wesley | Kossuth, Hancock, Cerro Gordo | 39.6 mi (63.73 km) | 1000 yds (914.4 m) | |
F4 | 5 | 20 | Osage | Mitchell, Howard | 25.3 mi (40.72 km) | Unknown | |
F4‡ | 16 | 70 | SW of Rock Falls | Cerro Gordo, Mitchell, Mower County, Minnesota, Fillmore County, Minnesota | 59.9 mi (96.4 km) | 800 yds (731.52 m) | |
F5‡ | 14 | 100 | N of Whittemore | Kossuth, Hancock, Winnebago, Faribault County, Minnesota | 50.6 mi (81.43 km) | 1500 yds (1371.6 m) | |
F3 | May 3, 1895 | 1 | 1 | W of Ashton | Osceola | 5 mi (8.05 km) | 200 yds (182.88 m) |
F3 | 0 | 5 | SE of St. Charles | Madison | 7 mi (11.27 km) | 100 yds (91.44 m) | |
F5 | 9 | 35 | N of Ireton | Sioux | 13.1 mi (21.08 km) | 1000 yds (914.4 m) | |
F3 | July 26, 1895 | 0 | 1 | E of Readlyn | Bremer, Black Hawk | 7 mi (11.27 km) | 150 yds (137.16 m) |
F4 | May 24, 1896 | 21 | 60 | SE of Polk City | Polk, Jasper | 28.1 mi (45.22 km) | 500 yds (457.2 m) |
F3 | September 16, 1896 | 0 | 1 | N of Melrose | Monroe | 5 mi (8.05 km) | 400 yds (365.76 m) |
F4 | April 30, 1898 | 2 | 1 | NW of Granville | Sioux | 15 mi (24.14 km) | 300 yds (274.32 m) |
F3 | 2 | Unknown | NW of Laurens | Pocahontas | 7.9 mi (12.71 km) | Unknown | |
F3‡ | 1 | 15 | SW of Newcastle, Nebraska | Dixon County, Nebraska, Union County, South Dakota, Plymouth, Sioux | 60 mi (96.56 km) | 200 yds (182.88 m) | |
F4‡ | May 18, 1898 | 28 | 150 | Stanwood | Cedar, Clinton, Jackson | 86.7 mi (139.53 km) | 1000 yds (914.4 m) |
F4 | July 27, 1898 | 2 | 5 | NW of Hastings | Mills, Montgomery | 15.2 mi (24.46 km) | 150 yds (137.16 m) |
F4 | April 26, 1899 | 1 | 10 | S of Soldier | Monona, Crawford | 11 mi (17.7 km) | 400 yds (365.76 m) |
F4 | May 16, 1899 | 4 | 14 | S of Edgewood | Clayton, Delaware | 10.8 mi (17.38 km) | 200 yds (182.88 m) |
F3 | May 28, 1899 | 0 | 0 | NE of Bondurant | Polk, Jasper | 15 mi (24.14 km) | 200 yds (182.88 m) |
F3 | May 30, 1899 | 0 | 0 | NE of Moville | Woodbury, Plymouth | 12 mi (19.31 km) | 200 yds (182.88 m) |
F3 | 1 | 8 | N of Glenwood | Mills, Pottawattamie | 8 mi (12.87 km) | 100 yds (91.44 m) | |
F3 | 0 | 6 | SE of Berea | Adair | 10 mi (16.09 km) | 300 yds (274.32 m) | |
F4‡ | June 11, 1899 | 5 | 2 | NE of Homer, Nebraska | Woodbury | 13.1 mi (21.08 km) | 200 yds (182.88 m) |
FU | F0 | F1 | F2 | F3 | F4 | F5 | Total | |
---|---|---|---|---|---|---|---|---|
0 | 0 | 1 | 262 | 41 | 33 | 1 | 338 | |
Deaths: >292 | Injuries: >1,861 |
A total of 338 tornadoes touched down in Iowa between 1900 and 1949. At least 292 people died and 1,861 people were injured. There were 75 intense F3+ tornadoes, the deadliest of which was the 1913 Easter tornado that hit Omaha, Nebraska, making its way over the border into Iowa, killing a total of 103 people and injuring 350 others. [20]
An F4 tornado touched down in La Vista, Nebraska, a suburb of Omaha, traveling through the city of Omaha and crossing the border into Iowa. In total, 103 people died, 9 of whom were in Iowa. [21] The tornado had a damage path of 40.3 mi (64.86 km) long and 400 yds (365.76 m) wide. [22]
On May 21, 1918, an F5 tornado touched down in Crawford County, moving across the county and into Greene County as well. According to witnesses, twenty or more farms were destroyed and a couple riding in a buggy north of Churdan were caught by the tornado and died. Mattresses were carried two miles away and farms and homes were wiped completely off their foundations. [23]
F# | Date | Deaths | Injuries | Start location | County | Path length | Max width |
---|---|---|---|---|---|---|---|
F3 | September 25, 1900 | 2 | 11 | SW of Haverhill | Marshall | 7.5 mi (12.07 km) | 70 yds (64 m) |
F3 | May 1, 1902 | 0 | 5 | S of Van Wert | Decatur, Clarke, Lucas | 15 mi (24.14 km) | 100 yds (91.44 m) |
F3 | May 26, 1903 | 2 | Unknown | Des Moines | Polk | 4.6 mi (7.4 km) | Unknown |
F3 | May 25, 1906 | 0 | 1 | SW of Whiting | Monona | 7 mi (11.27 km) | 100 yds (91.44 m) |
F3‡ | June 6, 1906 | 0 | 3 | NE of Burr Oak | Winneshiek, Houston County, Minnesota | 15 mi (24.14 km) | 100 yds (91.44 m) |
F4‡ | March 28, 1907 | 0 | 5 | NE of Elmo, Missouri | Page, Taylor | 15.5 mi (24.94 km) | 400 yds (365.76 m) |
F3 | 0 | 1 | Caledonia | Ringgold, Decatur | 25 mi (40.23 km) | Unknown | |
F4 | August 6, 1907 | 3 | 10 | W of Lake Mills | Winnebago, Worth | 12.2 mi (19.63 km) | 200 yds (182.88 m) |
F3 | April 23, 1908 | 0 | 1 | W of Inwood | Lyon | 10 mi (16.09 km) | 100 yds (91.44 m) |
F4‡ | May 12, 1908 | 0 | 20 | Watson, Missouri | Page | 33.9 mi (54.56 km) | 400 yds (365.76 m) |
F3 | June 7, 1908 | 1 | 10 | SW of Charles City | Floyd | 11 mi (17.70 km) | 100 yds (91.44 m) |
F3 | April 13, 1912 | 0 | 2 | S of Moingona | Boone | 8 mi (12.87 km) | 50 yds (45.72 m) |
F4‡ | March 23, 1913 | 25 | 75 | Bellevue, Nebraska | Pottawattamie, Harrison, Shelby, Sarpy County, Nebraska | 48.4 mi (77.89 km) | 400 yds (365.76 m) |
F4‡† | 103 | 350 | La Vista, Nebraska | Pottawattamie, Harrison, Shelby, Sarpy County, Nebraska, Douglas County, Nebraska | 40.3 mi (64.86 km) | 400 yds (365.76 m) | |
F4‡ | 22 | 50 | SE of Mead, Nebraska | Harrison, Saunders County, Nebraska, Douglas County, Nebraska, Washington County, Nebraska | 56.6 mi (91.09 km) | 800 yds (731.52 m) | |
F4‡ | 18 | 100 | S of Douglas, Nebraska | Mills, Pottawattamie, Otoe County, Nebraska, Cass County, Nebraska | 67.7 mi (108.95 km) | 800 yds (731.52 m) | |
F3‡ | 0 | 13 | W of Craig, Nebraska | Monona, Burt County, Nebraska | 15 mi (24.14 km) | 200 yds (182.88 m) | |
F3 | June 5, 1914 | 3 | 20 | E of Archer | O'Brien | 11.1 mi (17.86 km) | 200 yds (182.88 m) |
F4 | June 12, 1915 | 0 | 1 | S of West Union | Fayette, Clayton | 13.5 mi (21.73 km) | 100 yds (91.44 m) |
F4‡ | 9 | 50 | S of Elon | Allamakee, Crawford County, Wisconsin | 30.4 mi (48.92 km) | 400 yds (365.76 m) | |
F3 | September 26, 1916 | 0 | 0 | NE of Blanchard | Page, Taylor | 23 mi (37.01 km) | Unknown |
F4 | May 9, 1918 | 7 | 15 | SW of Nashua | Chickasaw, Floyd | 50 mi (80.47 km) | 800 yds (731.52 m) |
F2 | May 19, 1918 | 2 | 2 | Davenport | Scott | 2.2 mi ( 3.54 km) | Unknown |
F3 | May 21, 1918 | 2 | 15 | S of Glidden | Carroll | 31.9 mi (51.34 km) | 500 yds (457.2 m) |
F4‡ | 9 | 70 | N of Berkley | Boone | 29.5 mi (47.48 km) | 1600 yds (1463.04 m) | |
F4 | 8 | 100 | N of Wood | Clayton | 80.1 mi (128.9 km) | 400 yds (365.76 m) | |
F5 | 4 | 30 | E of Denison | Crawford | 42 mi (67.59 km) | 800 yds (731.52 m) | |
F4 | July 1, 1920 | 0 | 4 | SW of Carbon | Adams | 19.8 mi (31.87 km) | 500 yds (457.2 m) |
F4 | June 2, 1925 | 3 | 5 | NW of Anita | Cass | 13.8 mi (22.2 km) | 250 yds (228.6 m) |
F4 | 0 | 3 | W of Ticonic | Monona | 27.6 mi (44.42 km) | 400 yds (365.76 m) | |
F3 | 0 | 5 | NW of Red Oak | Montgomery | 12 mi (19.31 km) | 300 yds (274.32 m) | |
F4 | June 3, 1925 | 1 | 20 | N of Neola | Pottawattamie | 9.7 mi (15.61 km) | 1500 yds (1371.6 m) |
F4 | 0 | 10 | N of Neola | Pottawattamie | 6.9 mi (11.1 km) | Unknown | |
F3 | 0 | 1 | SW of Jefferson | Greene, Webster | Unknown | Unknown | |
F3 | July 11, 1925 | 1 | 18 | SW of Alexander | Wright, Franklin | 15 mi (24.14 km) | 60 yds (54.86 m) |
F4 | June 16, 1926 | 2 | 24 | SW of Clarinda | Page | 7.9 mi (12.71 km) | 200 yds (182.88 m) |
F3 | 0 | 5 | W of Redding | Taylor, Ringgold | 7 mi (11.27 km) | 400 yds (365.76 m) | |
F3 | May 23, 1927 | 0 | 2 | NW of Williamsburg | Iowa County, Iowa | 6 mi (9.66 km) | 200 yds (182.88 m) |
F3 | June 18, 1928 | 0 | 0 | SE of Prescott | Adams, Union | 15 mi (24.14 km) | 400 yds (365.76 m) |
F3 | August 20, 1928 | 2 | 20 | W of Twin Lakes | Calhoun | 6.2 mi (9.98 km) | 400 yds (365.76 m) |
F3 | 0 | 3 | S of Radcliffe | Hardin | 35 mi (56.33 km) | 800 yds (731.52 m) | |
F4 | 1 | 8 | SW of Jewell | Hamilton | 10.8 mi (17.38 km) | 400 yds (365.76 m) | |
F4‡ | 6 | 60 | SW of Vinje | Winnebago, Freeborn County, Minnesota, Mower County, Minnesota | 40.3 mi (64.86 km) | Unknown | |
F3 | August 26, 1928 | 4 | 20 | Red Oak | Montgomery, Cass | 15 mi (21.14 km) | 100 yds (91.44 m) |
F4 | September 13, 1928 | 5 | 52 | SW of Pender, Nebraska | Cuming County, Nebraska, Thurston County, Nebraska, Dakota County, Nebraska, Woodbury | 33 mi (53.11 km) | 800 yds (731.52 m) |
F3 | November 14, 1928 | 1 | 9 | S of Vinton | Benton, Linn, Buchanan, Delaware | 45 mi (72.42 km) | 200 yds (182.88 m) |
F3 | April 5, 1929 | 0 | 4 | W of Ellington | Hancock | 2 mi (3.22 km) | Unknown |
F4 | May 1, 1930 | 1 | 15 | E of Millerton | Wayne | 17.2 mi (27.68 km) | 100 yds (91.44 m) |
F4‡ | 4 | 40 | W of Craig, Nebraska | Harrison | 15.5 mi (24.94 km) | 600 yds (548.64 m) | |
F3 | 0 | 7 | E of Clio | Wayne | 18 mi (28.97 km) | 400 yds (365.76 m) | |
F4 | September 21, 1931 | 2 | 8 | NW of Birmingham | Van Buren | 45.9 mi (73.87 km) | 100 yds (91.44 m) |
F3 | July 14, 1935 | 0 | 0 | W of Sumner | Bremer, Fayette | 10 mi (16.09 km) | 50 yds (45.72 m) |
F4 | April 30, 1936 | 2 | 15 | NE of Hartley | O'Brien | 14.8 mi (23.82 km) | 100 yds (91.44 m) |
F4‡ | 2 | 61 | Estherville | Emmet | 40.2 mi (64.7 km) | 800 yds (731.52 m) | |
F3 | May 26, 1937 | 1 | 8 | N of Mingo | Jasper, Marshall | 20 mi (32.19 km) | 400 yds (365.76 m) |
F3 | May 18, 1938 | 0 | 0 | NE of Bernard | Dubuque, Jackson | 15 mi (24.14 km) | 100 yds (91.44 m) |
F3 | August 10, 1939 | 0 | 4 | W of Liberty Center | Warren | 12 mi (19.31 km) | 400 yds (365.76 m) |
F3 | September 7, 1941 | 0 | 6 | Prairie City | Jasper, Poweshiek | 30 mi (48.28 km) | 600 yds (548.64 m) |
F3‡ | May 30, 1942 | 0 | 0 | W of Lake Park | Dickinson, Jackson County, Minnesota | 20 mi (32.19 km) | 600 yds (548.64 m) |
F3‡ | May 18, 1944 | 0 | 1 | SW of Tekamah, Nebraska | Burt County, Nebraska, Monona | 30 mi (48.28 km) | 300 yds (274.32 m) |
F3 | 2 | 12 | White Oak | Polk, Story | 14.9 mi (23.98 km) | 880 yds (804.67 m) | |
F3 | 0 | 0 | W of Deloit | Crawford, Sac | 18 mi (28.97 km) | 800yds (731.52 m) | |
F3 | 0 | 0 | SW of Paton | Greene | 5 mi (8.05 km) | 200 yds (182.88 m) | |
F4 | May 19, 1944 | 1 | 9 | W of Fort Dodge | Webster | 6.2 mi (9.98 km) | 400 yds (365.76 m) |
F3 | 0 | 0 | S of Albert City | Buena Vista, Pocahontas | 12 mi (19.31 km) | 200 yds (182.88 m) | |
F3 | June 11, 1944 | 0 | 0 | N of Glenwood | Mills | 2 mi (3.22 km) | 100 yds (91.44 m) |
F4 | June 16, 1944 | 0 | 1 | Lebanon | Sioux | 8.1 mi (13.04 km) | Unknown |
F4 | 0 | 2 | Newkirk | Sioux | 10 mi (16.09 km) | Unknown | |
F3 | 0 | 0 | W of Sioux Center | Sioux | 5 mi (8.05 km) | Unknown | |
F3 | May 21, 1945 | 0 | 1 | SW of Stanton | Montgomery | 9 mi (14.48 km) | Unknown |
F3‡ | April 29, 1947 | 0 | 1 | S of Hatfield, Missouri | Decatur, Wayne, Harrison County, Missouri, Mercer County, Missouri | 40 mi (64.37 km) | 200 yds (182.88 m) |
F4‡ | June 9, 1947 | 1 | 2 | SE of Elk Point, South Dakota | Sioux, Union County, South Dakota, Dixon County, Nebraska | 34.8 mi (56 km) | 200 yds (182.88 m) |
F4 | April 23, 1948 | 5 | 25 | S of Chickasaw | Chickasaw | 7.8 mi (12.55 km) | 100 yds (91.44 m) |
F4‡ | June 22, 1948 | 1 | 5 | S of Cook, Nebraska | Fremont, Mills, Johnson County, Nebraska, Otoe County, Nebraska | 51 mi (82.08 km) | 300 yds (274.32 m) |
F3‡ | June 1, 1949 | 0 | 0 | SW of Paul, Nebraska | Fremont, Otoe County, Nebraska | 12 mi (19.31 km) | 100 yds (91.44 m) |
F4 | 0 | 4 | E of Shenandoah | Page,Fremont | 9.8 mi (15.77 km) | 150 yds (137.16 m) |
FU | F0 | F1 | F2 | F3 | F4 | F5 | Total | |
---|---|---|---|---|---|---|---|---|
127 | 1,318 | 971 | 499 | 121 | 49 | 6 | 3,118 | |
Deaths: >101 | Injuries: >2,400 |
A total of 3,118 recorded tornadoes have touched down in Iowa since 1950, causing 101 deaths and injuring 2,400 as of July 2025. There have been 20 (E)F5 tornadoes, or 2 or more fatalities, the deadliest being the 1968 Hansell-Charles City tornado, which killed 13 and injured 462. [24]
On May 15, 1968, a multi-vortex tornado hit the communities of Hansell, Hampton, Charles City, Elma, and Aredale, all in Iowa. It killed 13, injured 462, and hundreds of buildings were destroyed, primarily in the town of Charles City. Damage estimates were of more than $20 million. All of the deaths occurred in Charles City. [25]
On the afternoon of May 25, 2008, as part of a large tornado outbreak across the central plains, a large and extremely powerful EF5 wedge tornado devastated the towns of Parkersburg and New Hartford. The tornado killed nine people and caused about $75 million in damages in its approximately 43 mile path across northeast Iowa. The tornado killed 7 in Parkersburg and 2 in New Hartford. [26] [27]
On the afternoon of May 21, 2024, a violent tornado tracked across southwestern Iowa, devastating the city of Greenfield. The tornado destroyed many structures and wind turbines across its path that stretched through Page, Taylor, Adams, and Adair counties, while also causing more than $31 million in property damage, killing five people and injuring 35 more. All of the fatalities happened in the town of Greenfield. [28] A Doppler on Wheels estimated wind speeds of 309–318 mph (497–512 km/h), the third highest wind estimate from inside a tornado in the United States, before the 2013 El Reno tornado and the Bridge Creek tornado. [29]
F# | Date | Deaths | Injuries | Start location | County | Path length | Max width |
---|---|---|---|---|---|---|---|
F5 | June 27, 1953 | 1 | 2 | W of Anita | Cass | 0.1 mi (0.16 km) | 100 yds (91.44 m) |
F5 | October 14, 1966 | 6 | 172 | SW of Belmond | Wright | 9.7 mi (15.61 km) | 1000 yds (914.4 m) |
F3 | April 16, 1967 | 2 | 16 | N of Cantril | Van Buren | 19.4 mi (31.22 km) | 500 yds (457.2 m) |
F5 | May 15, 1968 | 13 | 462 | NW of Hansell | Franklin | 62.1 mi (99.94 km) | 600 yds (548.64 m) |
F5 | 5 | 156 | Oelwein | Fayette | 13.1 mi (21.08 km) | 500 yds (457.2 m) | |
F2 | June 17, 1973 | 2 | 10 | Moville | Woodbury | 2 mi (3.22 km) | 400 yds (365.76 m) |
F4 | June 18, 1974 | 2 | 50 | Ankeny | Polk | 15.3 mi (24.62 km) | 400 yds (365.76 m) |
F5 | June 13, 1976 | 0 | 9 | SW of Luther | Boone | 21.3 mi (34.28 km) | 880 yds (804.67 m) |
F3 | September 16, 1978 | 6 | 45 | N of Rhodes | Marshall | 31.8 mi (51.18 km) | 200 yds (182.88 m) |
F3 | June 28, 1979 | 2 | 34 | SW of Bancroft | Kossuth | 15.9 mi (25.59 km) | 300 yds (274.32 m) |
F4 | 3 | 26 | Palmer | Pocahontas | 14.9 mi (23.98 km) | 33 yds (30.18 m) | |
F3‡ | August 28, 1979 | 2 | 14 | NE of Bartlett | Fremont | 38.3 mi (61.64 km) | 533 yds (487.38 m) |
F4‡ | June 7, 1984 | 3 | 64 | S of Eagleville, Missouri | Harrison | 134 mi (215.65 km) | 250 yds (228.6 m) |
F3 | May 30, 1985 | 2 | 27 | N of Volga | Clayton | 34 mi (54,72 km) | 1500 yds (1371.6 m) |
F3 | May 16, 1999 | 2 | 16 | N of Missouri Valley | Harrison | 7.5 mi (12.07 km) | 440 yds (404.34 m) |
F2 | April 11, 2001 | 2 | 3 | S of Ottumwa | Wapello | 8.4 mi (13.52 km) | 100 yds (91.44 m) |
EF5 | May 25, 2008 | 9 | 70 | S of Aplington | Butler | 41 mi (65.98 km) | 2100 yds (1920.24 m) |
EF3‡ | June 11, 2008 | 4 | 48 | E of Tekamah, Nebraska | Burt | 14.2 mi (22.85 km) | 440 yds (404.34 m) |
EF1 | April 27, 2014 | 2 | 0 | SW of Hedrick | Keokuk | 45.7 mi (73.55 km) | 1600 yds (1463.04 m) |
EF4 | March 5, 2022 | 6 | 5 | NW of Macksburg | Madison | 70.57 mi (113.57 km) | 900 yds (822.96 km) |
EF4 | May 21, 2024 | 5 | 35 | S of Villisca | Montgomery | 44 mi (70.81 km) | 1000 yds (914.4 m) |