Johnson County, MO Environment & Hazard Risk

• Cold waveRelatively Moderate$5.2M/yr expected annual loss, about 2.2 events a year
• Heat waveRelatively Moderate$2.1M/yr expected annual loss, about 14 events a year
• Ice stormRelatively Moderate$418K/yr expected annual loss, about once every 1 year
• Winter weatherRelatively Moderate$191K/yr expected annual loss, about 11 events a year
• HailRelatively Low$669K/yr expected annual loss, about 6.7 events a year
• DroughtRelatively Low$429K/yr expected annual loss, about 11 events a year
• LandslideVery Low$3,671/yr expected annual loss, about once every 5 years
• TornadoRelatively Low$2.1M/yr expected annual loss, about once every 2 years
• EarthquakeVery Low$358K/yr expected annual loss, about once every 682 years
• LightningRelatively Low$299K/yr expected annual loss, about 50 events a year
• Strong windRelatively Low$549K/yr expected annual loss, about 4.8 events a year
• WildfireVery Low$17.5K/yr expected annual loss, about once every 2,506 years
• HurricaneVery Low$9,821/yr expected annual loss, about once every 100 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, riverine flooding, tsunami, volcanic activity.

Check the flood zone for an address

Homes with flood insurance

68 of 20,806 (0.3%)

Homes in high-risk flood zones

238

Insured in high-risk zones

51 (21%)

Flood claims since 1978

44

Claims paid since 1978

$307K

• Hail248
• Thunderstorm Wind196
• Flood94 · 1 death
• Flash Flood47
• Drought28
• Tornado21
• Winter Storm20 · 1 death
• Heat14
• Heavy Snow12
• Ice Storm9

• Lightning06/29/2024

  Holden, Johnson County

  1 death, 1 injured

  What happened

  A 53 year old man was struck by lightning in the parking lot at the conclusion of the Holden, MO Rodeo. The lightning strike was fatal.

• Lightning06/29/2024

  Holden, Johnson County

  1 death

  What happened

  A 53 year old man was killed when struck by lightning in the parking lot outside of the Holden Chamber of Commerce Rodeo around 11 pm CDT on Friday, June 28th, 2024.

• Winter Weather11/11/2019

  Johnson

  1 death

  What happened

  The vehicle was travelling southbound on Route F and lost control on the ice covered roadway. The vehicle left the roadway and overturned in the ditch.||MHP accident report: https://www.mshp.dps.missouri.gov/HP68/AccidentDetailsAction?ACC_RPT_NUM=190657227 .

• Winter Storm01/12/2007

  Johnson

  1 death

  What happened

  One to two inches of freezing rain and sleet accumulated across the county. A 19 year old female died on Highway 13 near SE 500 when she collided with another vehicle.

• Flood06/28/1999

  Johnson

  1 death

  What happened

  Excessive rainfall across northeast Kansas and northwest and west-central Missouri on June 27 and 28 caused extensive river flooding across western and central Missouri. Minor to moderate flooding occurred on the Missouri River at St. Joseph, Kansas City, Sibley, Napoleon, Glasgow, and Boonville, Big Creek near Blairstown, the Blackwater River at Valley City and Blue Lick, the Blue River near Bannister Road and Blue Parkway in Kansas City, the Lamine River at Otterville, the Little Blue near Lake City, the Platte River at Sharps Station and Platte City, the South Grand at Urich, the Little Platte near Smithville, the Crooked River near Richmond, the Fishing River near Mosby, and the Chariton River at Brunswick. Major flooding occurred at two locations on the Missouri River. At Waverly, the river crested on June 30 at 29.05 feet, which is 9.05 feet above flood stage. At Miami, the river crested on the evening of June 30 at 27.5 feet, which is 9.5 feet above flood stage. Many of the affected streams remained above flood stage into the month of July. On June 28, a 29-year old man was killed after apparently being swept under while rappelling off a bridge into the flooded...

• TornadoF2, 12 mi path, 200 yd wide03/13/2006

  Leeton, Johnson County

  4 injured, $2M damage

  What happened

  Tornado touched down at 2040 CST 2 miles northeast of Leeton...producing F0 damage along PP Highway. As it moved northeast...additional F0 to F1 damage was noted to a farmstead along SE 650th Road. The most intense F2 damage was noted along Y Highway just east of Highway 23...where several homes suffered F2 damage. The tornado crossed into Pettis county at 2057 CST...1.5 miles southeast of Whiteman Air Force Base.

• Mo American WarrensburgServes 18,500 · Groundwater · PrivateNo health violations
• Johnson County Pwsd 2Serves 12,490 · Groundwater · Local governmentNo health violations
• Whiteman Air BaseServes 10,106 · Groundwater · FederalNo health violations+3 monitoring or reporting
• Laf Jo Saline County Cons Pwsd 2Serves 7,180 · Purchased surface water · Local governmentNo health violations
• Johnson County Pwsd 3Serves 5,317 · Groundwater · Local governmentNo health violations
• Johnson County Pwsd 1Serves 4,240 · Groundwater · Local governmentNo health violations+2 monitoring or reporting
• Knob Noster PwsServes 2,863 · Groundwater · Local governmentNo health violations+1 monitoring or reporting
• Holden PwsServes 2,683 · Surface water · Local governmentNo health violations+8 monitoring or reporting