Overland

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond this area.
2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Every storm within 100 miles

1. Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.

National Hurricane Center HURDAT2, 1851 to 2025.

Smoke overhead

1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Flood insurance figures are for St. Louis County, the county that contains Overland.

Claims by ZIP code

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

River crests

River gauges in St. Louis County, the county that contains Overland.

River gauges

1. Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.

NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.

The drought index is for St. Louis County, the county that contains Overland.

1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

Every earthquake of magnitude 4 or more within 50 miles

1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the city centre.
2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

Mapped landslides

Landslides mapped in St. Louis County.

Mapped by MO DNR (13), NASA (1).

1. Landslides mapped in the USGS compilation of landslide inventories across the United States (version 3.0, 2025), rated probable or better. The compilation joins inventories made by federal and state agencies for different purposes and areas, so the number mapped in a county reflects how closely it has been surveyed as much as how often its slopes fail. An area with few records may simply not have been mapped. Deaths are as recorded in the inventories; a slide listed in two inventories is counted once.

USGS Landslide Inventories across the United States, version 3.0, retrieved October 27, 2026.

More event types since 1996

Costliest events since 1996

1. Apr 10, 2001Hail$400 million
   National Weather Service narrative

   The Heavy Precipitation Supercell continued east from St. Charles County and moved into north St. Louis County. The storm will likely go down in history as one of the most damaging hail storms ever in the area. Hail ranged from 1 to nearly 3 inches in diameter. Thousands of homes and automobiles were damaged. Some automobile dealerships lost virtually their entire inventory. At the Ford Motor Company assembly plant in Hazelwood, all vehicles (hundreds) parked outside were damaged. In Florissant, a community of close to 70,000 people, it was estimated that almost every home suffered some type of hail damage. One insurance company reported that they were working on 20,000 vehicle…

2. Apr 10, 2001Hail$300 million
   National Weather Service narrative

   The Heavy Precipitation Supercell continued east from St. Charles County and moved into north St. Louis County. The storm will likely go down in history as one of the most damaging hail storms ever in the area. Hail ranged from 1 to nearly 3 inches in diameter. Thousands of homes and automobiles were damaged. Some automobile dealerships lost virtually their entire inventory. At the Ford Motor Company assembly plant in Hazelwood, all vehicles (hundreds) parked outside were damaged. In Florissant, a community of close to 70,000 people, it was estimated that almost every home suffered some type of hail damage. One insurance company reported that they were working on 20,000 vehicle…

3. Apr 22, 2011Tornado$250 million
   National Weather Service narrative

   During the evening of Friday April 22nd, an intense supercell thunderstorm produced a long-track tornado which tore a path of destruction from west to east across the St. Louis Metropolitan Area, from St. Louis County Missouri eastward through the far northern portions of the City of St. Louis, then across the Mississippi River into Madison County Illinois. The tornado reached a maximum intensity of EF4 on the Enhanced Fujita Scale as it tracked through the community of Bridgeton, just west of Lambert St. Louis International Airport, in St. Louis County. The total path length was 21.3 miles, with a width of up to half a mile.||The tornado initially touched down along the northern…

4. Dec 27, 2015Flood$235 million
   National Weather Service narrative

   Between 7 and 10 inches of rain fell across St. Louis County during a 2 day period. All of this rain caused the creeks and rivers to rise. The Meramec River went into major flood with several points cresting at record levels. Almost 900 structures were either damaged or destroyed from the river flooding, with Eureka, Valley Park and Fenton being some of the worst hit areas in St. Louis County. One school, Eureka High School, sustained some flooding damage, mainly to the gymnasium area, which included the wood gym floors, locker rooms, wrestling room, aerobics room and a storage area. Also, two Metropolitan St. Louis Sewer District wastewater treatment plants were inundated by the…

5. Apr 10, 2001Hail$100 million
   National Weather Service narrative

   The Heavy Precipitation Supercell continued east from St. Charles County and moved into north St. Louis County. The storm will likely go down in history as one of the most damaging hail storms ever in the area. Hail ranged from 1 to nearly 3 inches in diameter. Thousands of homes and automobiles were damaged. Some automobile dealerships lost virtually their entire inventory. At the Ford Motor Company assembly plant in Hazelwood, all vehicles (hundreds) parked outside were damaged. In Florissant, a community of close to 70,000 people, it was estimated that almost every home suffered some type of hail damage. One insurance company reported that they were working on 20,000 vehicle…

6. Apr 10, 2001Hail$50.0 million
   National Weather Service narrative

   The Heavy Precipitation Supercell continued east from St. Charles County and moved into north St. Louis County. The storm will likely go down in history as one of the most damaging hail storms ever in the area. Hail ranged from 1 to nearly 3 inches in diameter. Thousands of homes and automobiles were damaged. Some automobile dealerships lost virtually their entire inventory. At the Ford Motor Company assembly plant in Hazelwood, all vehicles (hundreds) parked outside were damaged. In Florissant, a community of close to 70,000 people, it was estimated that almost every home suffered some type of hail damage. One insurance company reported that they were working on 20,000 vehicle…

7. Jul 26, 2022Flash Flood$50.0 million
   National Weather Service narrative

   Up to 10 inches of rain fell in a period of 8 hours causing catastrophic flooding in portions of St. Louis County. Numerous roads were flooded. There were multiple swift water rescues and scores of flooded interstates and homes across the St. Louis metropolitan area. One fatality was reported in Hazelwood where a 39 year old man drowned attempting to flee his flooded truck. His body was found about half a mile down stream from the semi truck. St. Louis-Lambert International Airport also observed a new all-time record for daily precipitation: 8.64 of rain fell since midnight Central Standard Time (Daylight Savings Time is not used for climatological record-keeping). This value…

8. Nov 30, 2006Winter Storm, St. Louis$40.0 million
   National Weather Service narrative

   A major winter storm hit Central, Northeast, East Central and parts of Southeast Missouri from November 30 through Dcember 1. Over a foot of snow fell across parts of Central Missouri while a major ice storm hit parts of East Central and Southeast Missouri, including the St. Louis area. Ice accumulations of 1 inch or more downed trees and power lines resulting in at least 300,000 electric customers losing service for up to a week. Downed limbs and trees damaged homes and automobiles across the area as well. Many rural schools were closed for several days due to slick roads and power outages. The National Guard was called out to several counties to assist with debris removal and…

9. May 31, 2013Tornado$10.0 million
   National Weather Service narrative

   The tornado crossed the Missouri River from St. Charles County into St. Louis County just south of Interstate 70. As it moved through the Riverport area, it caused major damage to one of the buildings at Hollywood Casino. Part of the roof and most of the siding were torn off of a section of the casino that housed maintenance and staff offices. Five large power poles were snapped off at the base. The damage in this area was rated EF2. Also, numerous trees were snapped off. Further to the east in the Riverport area, a gas station lost part of its canopy and a nearby hotel sustained minor roof damage as well as several windows blown out. The tornado then crossed Interstate 70 into…

10. Mar 14, 2025Tornado$5.0 million
    National Weather Service narrative

    The tornado then moved into western St. Louis county from Franklin County, where it continued to produce concentrated, significant tree damage before dissipating at the bend in Highway 100, northeast of Fox Creek.

1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

All-time high

115°FJul 14, 1954

All-time low

−18°FJan 20, 1985

Warmest night

86°FJul 25, 2012

Coldest day

−5°FDec 24, 1983

Wettest day

8.64 inJul 26, 2022

Snowiest day

12.4 inMar 24, 2013

Hottest year

2012mean 61.2°F

Coldest year

1978mean 53.4°F

Wettest year

201561.24 in

Driest year

195320.59 in

Snowiest season

66.0 in1977-78

Station St. Louis Lambert International Airport (USW00013994), 531 ft elevation, 3.9 miles from the city centre. Daily records from 1938 to October 27, 2026; 100.0% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.

NOAA NCEI Global Historical Climatology Network Daily.

Declarations for St. Louis County.

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

• Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
• Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
• Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
• Storm events NOAA NCEI Storm Events Database, through 2026.
• Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
• Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
• Weather records NOAA NCEI Global Historical Climatology Network Daily, station USW00013994.
• River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
• Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
• Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
• Landslides USGS Landslide Inventories across the United States, version 3.0 (2025).
• Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.