Skip to content
Risk: Very Low

Mitchell County, IA Environment & Hazard Risk

Very Low natural hazard risk, led by strong wind. 416 storm events since 1996.

Expected yearly loss
$14.4M
Very Low nationally
Storm events since 1996
416
Most often hail
Flood insurance policies
9
0.2% of homes
Hurricanes nearby
0
Since 1851

Natural hazard risk

FEMA National Risk Index, December 2025

Overall risk

Very Low

Score 37.7 of 100

Social vulnerability

Very Low

Score 17.5 of 100

Community resilience

Very High

Score 85.9 of 100

Community resilience runs the other way: a higher rating means a community can recover faster.

Building value exposed: $3.2B · Agriculture value exposed: $407M · Risk-adjusted yearly loss: $12.3M

Risk by hazard

  • Strong windRelatively High$4.6M/yr expected annual loss, about 3.8 events a year
  • DroughtRelatively Moderate$2.1M/yr expected annual loss, about 22 events a year
  • HailRelatively Low$420K/yr expected annual loss, about 4.5 events a year
  • TornadoRelatively Low$1.4M/yr expected annual loss, about once every 3 years
  • Winter weatherRelatively Low$70K/yr expected annual loss, about 19 events a year
  • Cold waveRelatively Low$566K/yr expected annual loss, about 9.7 events a year
  • LandslideVery Low$347/yr expected annual loss, about once every 20 years
  • Ice stormVery Low$21.8K/yr expected annual loss, about once every 1 year
  • Heat waveVery Low$51.3K/yr expected annual loss, about 3.8 events a year
  • WildfireVery Low$4,769/yr expected annual loss, about once every 10,070 years
  • LightningVery Low$44.5K/yr expected annual loss, about 40 events a year
  • EarthquakeVery Low$5,661/yr expected annual loss, about once every 2,336 years

Bars show the national percentile score (0 to 100) for each hazard. Dollar figures are expected annual losses to buildings, people and crops. Not rated here: avalanche, coastal flooding, hurricane, riverine flooding, tsunami, volcanic activity.

Flood risk and insurance

National Flood Insurance Program and FEMA flood maps

Check the flood zone for an address

Homes with flood insurance
9 of 5,264 (0.2%)
Homes in high-risk flood zones
87
Insured in high-risk zones
5 (6%)
Flood claims since 1978
25
Claims paid since 1978
$467K

Flood claims paid per year

Flood claims paid per year in Mitchell County
Beta
  • June Midwest Flooding$172K · 3 claims
  • Storm$70.4K · 4 claims

Storm history

Since 1996: 416 events, 0 deaths, $83.5M in damage

  • Hail78
  • Thunderstorm Wind74
  • Winter Storm51
  • Drought23
  • Flash Flood23
  • Blizzard21
  • Flood21
  • Extreme Cold/Wind Chill19
  • High Wind17
  • Heavy Snow15
Beta

Events per year

Storm events per year in Mitchell County
8
23
7
21
12
12
31
8
10
28
23
13
9
7
17
12
14
12
9
10
Beta

19 tornadoes on record (EF0 5, EF1 2, F0 4, F1 5, F2 3).

Most damaging storms

Since 1996, ranked by deaths, injuries and damage

  • Thunderstorm Wind61 kt wind09/02/2011

    Carpenter, Mitchell County

    $41.4M damage

    What happened

    Widespread corn and bean fields were flattened across Mitchell County. The USDA estimated that 500 acres of corn were destroyed while 81,000 acres suffered a 60% yield loss. Almost 8,600 acres of beans suffered a 10% yield loss. Total crop losses were estimated to be in excess of $41 million. The U.S. Department of Agriculture issued a natural disaster designation for this damage.

  • Flash Flood05/20/2013

    Otranto, Mitchell County

    $24.5M damage

    What happened

    Heavy rain produced wide spread flash flooding across much of Mitchell County. Numerous roads around Stacyville were under water by early evening and sand bagging occurred along the Little Cedar River. U.S. Highway 218 was closed by flooding between Osage and St. Ansgar and State Highway 9 was closed east and west of Osage. West of Osage, two culverts were washed away, causing a section of Highway 9 to collapse. A total of 22 roads were closed, 6 to 8 bridges washed out and approximately 90 percent of the gravel roads across the entire county were covered with water. Damage to the roads was estimated to be around $4.5 million. In addition to all the road damage, a railroad bridge north of St. Ansgar was also washed out. The Stacyville fire department reported between 6 and 7 inches of rain had fallen during the mid and late afternoon hours. The heavy rains also took out about 15 percent of the county's corn crop.

  • Flash Flood08/28/2021

    Otranto, Mitchell County

    $3.5M damage

    What happened

    Runoff from heavy rains pushed the Little Cedar River out of its banks. County roads A46 and T64 near New Haven had to be closed because of the flood waters. Spring Creek also went out if its banks causing U.S. Highway 18 to be closed near Osage. A dam on the Cedar River near Mitchell sustained damage from the flood waters. Numerous gravel roads across the county suffered washouts.

  • Flood06/08/2008

    Meyer, Mitchell County

    $2.7M damage

    What happened

    Highway 218 was closed due to flooding and Highway 9 east of Osage was closed since water topped the bridge. Widespread overland flooding continued across the county, which was described as a lake on Sunday June 8. In addition, the Cedar River was in flood for several days, cresting in Charles City, Iowa during the morning of June 9th.||In Stacyville the flooding was the worst in years and left water standing in fields for more than a week. Besides crop damage, many basements were flooded.

  • Flash Flood06/08/2008

    Mona, Mitchell County

    $2.5M damage

    What happened

    Flash flooding closed several secondary roads in the county with numerous bridges and culverts washed out.

  • Thunderstorm Wind61 kt wind04/07/2001

    Osage, Mitchell County

    $1M damage

    What happened

    Wind gusts estimated at 65 to 70 mph caused damage to several farms, knocking down sheds and outbuildings. Ten cattle were killed when a large shed collapsed on them. A 660 foot chicken house, containing 45,000 chickens, was completely destroyed, injuring and killing many of the animals.

Drinking water

5 community water systems serve about 6,147 people. Violations since 2021.

None of the systems serving this county had a health-based violation in this period.

Largest systems by population served. Monitoring and reporting violations mean required tests or notices were late or missing, not that the water was unsafe.

Pollution sites

0 Superfund sites and 4 toxic release facilities in Mitchell County

Superfund sites

None in this county.

Toxic release facilities

Total: 42,726 lbs in 2024, 35,566 lbs to air.

Superfund sitesToxic release facilitiesEPA inspections and enforcementAir toxics cancer risk8 historic places

Frequently asked questions

How risky is Mitchell County for natural disasters?
FEMA rates Mitchell County very low for overall natural hazard risk, with expected losses of $14.4M a year. The highest-rated hazards are strong wind (relatively high), drought (relatively moderate), hail (relatively low).
What storms are most common in Mitchell County?
Since 1996, NOAA recorded 416 storm events affecting Mitchell County, most often hail (78), thunderstorm wind (74), winter storm (51).
How many tornadoes have hit Mitchell County?
19 tornadoes have been recorded in Mitchell County since 1950.
How many homes in Mitchell County have flood insurance?
9 residential flood insurance policies are in force in Mitchell County, covering about 0.2% of homes. The program has paid $467K on 25 claims here since 1978.
What is the weather like in Mitchell County?
At Osage, average highs reach 81°F in Jul and lows fall to 6°F in Jan, with 37.6 inches of rain a year (1991-2020 normals).

Source: FEMA (National Risk Index, NFIP), NOAA (Storm Events, HURDAT2, Climate Normals), EPA · Last updated 08/01/2026 · Storm counts include events in forecast zones that touch the county. This product uses the FEMA OpenFEMA API, but is not endorsed by FEMA.

Share: