Warren County, MO Environment & Hazard Risk

• Heat waveRelatively Moderate$5.9M/yr expected annual loss, about 12 events a year
• LandslideRelatively Low$13K/yr expected annual loss, about once every 2 years
• HailRelatively Moderate$977K/yr expected annual loss, about 5.4 events a year
• EarthquakeRelatively Low$1.5M/yr expected annual loss, about once every 302 years
• Ice stormRelatively Moderate$216K/yr expected annual loss, about 1.3 events a year
• WildfireVery Low$102K/yr expected annual loss, about once every 1,651 years
• TornadoRelatively Low$2.2M/yr expected annual loss, about once every 4 years
• Strong windRelatively Moderate$938K/yr expected annual loss, about 5.6 events a year
• Cold waveRelatively Low$1.2M/yr expected annual loss, about 1.9 events a year
• Winter weatherRelatively Low$57.7K/yr expected annual loss, about 9.1 events a year
• DroughtRelatively Low$41.6K/yr expected annual loss, about 2.4 events a year
• LightningRelatively Low$167K/yr expected annual loss, about 50 events a year
• HurricaneVery Low$2,536/yr expected annual loss, about once every 146 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

42 of 18,152 (0.2%)

Homes in high-risk flood zones

225

Insured in high-risk zones

27 (12%)

Flood claims since 1978

102

Claims paid since 1978

$2.3M

• Thunderstorm Wind95
• Hail93
• Winter Storm35
• Heat28
• Excessive Heat27 · 1 death
• Flash Flood23
• Flood10
• Tornado10
• Heavy Snow9
• Drought7

• Excessive Heat06/27/2012

  Warren

  43 injured

  What happened

  Some of the hottest temperatures in many years occurred the last 4 days of June and continued into July. St. Louis, MO recorded its highest ever June temperature hitting 108 degrees on June 28. Nearly all reporting stations were over 100 degrees the last 3 to 4 days of June with most sites around 105. The 28th was the hottest day. Some high temperatures across the Missouri counties on the 28th included 109 degrees at Spirit of St. Louis Airport in Chesterfield, 108 in Farmington and Fredericktown, 107 in Washington, Columbia, and Jefferson City, and 106 in Warrenton. The good thing was the air was very dry, thus the Heat Index was not much different than the air temperature. The City of St. Louis reported two heat related deaths on June 30. St. Louis County reported 20 heat related injuries on June 29, and 23 on June 30.

• Excessive Heat07/16/2012

  Warren

  1 death

  What happened

  Excessive heat returned to the area as high temperatures ranged from 100 to 106. The Heat Index was a couple of degrees higher. St. Louis County reported one heat related death and 34 injuries. The City of St. Louis reported 19 heat related cases treated at local hospital emergency rooms.

• Heat07/18/1999

  Warren

  2 injured

  What happened

  A heat wave gripped the area for the last 2 weeks of July. Temperatures stayed in the middle to upper 90s with a few days topping 100. Columbia set a record high with 104 degrees on 7/29/99. St. Louis tied a record with 103 degrees on 7/30/99. The Heat Index generally ranged from 105 to near 115. Most of the deaths and injuries occurred in the St. Louis Metropolitan Area.

• Heat07/18/1998

  Warren

  2 injured

  What happened

  High temperatures in the middle to upper 90s along with Heat Index readings around 110 resulted in numerous heat related injuries across the region. Fortunately, there were no deaths attributed to the heat.

• Thunderstorm Wind61 kt wind07/29/2023

  Case, Warren County

  1 injured

  What happened

  Thunderstorm winds blew a tree down onto a bridge that crosses Bear Creek, about 4 miles south southwest of High Hill. About 4 miles northeast of Jonesburg, a tree fell onto an occupied car causing moderate injuries to the occupant.

• Heat07/26/2002

  Warren

  1 injured

  What happened

  High temperatures across Central, Eastern and Southeast Missouri rose to the middle to upper 90's with Heat Indices from 105 to near 115 degrees. There was a one day break in the heat as a weak cold front dropped high temperatures into the upper 80's on July29. However temperatures quickly rebounded and remained high into August. About 100 people had to be treated for heat related illnesses at the St. Louis Cardinals baseball game on July 27.

• Warrenton PwsServes 8,208 · Groundwater · Local governmentNo health violations
• Montgomery Co Pwsd 1Serves 3,850 · Groundwater · Local government1 health violation+4 monitoring or reporting
• St Charles Co Pwsd #2 Wright CityServes 3,550 · Groundwater · Local governmentNo health violations+3 monitoring or reporting
• Marthasville PwsServes 1,200 · Groundwater · Local government1 health violation+3 monitoring or reporting
• Mo American Warren County Water & SewerServes 1,200 · Groundwater · PrivateNo health violations
• St Charles County Pwsd 2 WarrenServes 1,192 · Groundwater · Local governmentNo health violations
• Lake Sherwood SubdServes 1,100 · Groundwater · PrivateNo health violations+45 monitoring or reporting
• Truesdale PwsServes 853 · Groundwater · Local governmentNo health violations