Audrain County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Audrain County: 0.
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.

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.

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.

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.

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 county boundary (or inside the county).
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

Mapped by MO DNR (4).

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. Jul 21, 2025Flash Flood$60,000
   National Weather Service narrative

   Heavy rain caused numerous roads to become impassable in Audrain County. These include Highway 54 in Farber, two unnamed roads north of Laddonia, many roads in Laddonia proper, Highway BB just west of Highway W near Middletown, and Highway J at Highway B north of Rush Hill. A water rescue was completed on Highway 54 between Farber and Bassinger Corner. Another vehicle was stuck in water in front of the POET Biorefinery. A third vehicle was stuck in water on Highway 19 in Martinsburg.

2. Apr 20, 2025Tornado$60,000
   National Weather Service narrative

   A brief tornado tracked south to north just west of Highway MM in north-central Audrain County, destroying a couple of outbuildings and rolling two smaller grain bins. Debris was generally thrown northward and strewn widely, likely due to a downburst immediately following the tornado. The tornado was rated EF-1 with a path length of 0.32 miles and a maximum path width of 50 yards.

3. Jun 25, 2024Thunderstorm Wind$50,000
   National Weather Service narrative

   One direct fatality occurred 5 miles north of Martinsburg when an old, dilapidated barn on Highway 54 collapsed on an individual seeking shelter from the thunderstorm. Large trees and tree limbs were blown down in Vandalia, Laddonia, and Mexico. Siding was also blown off a church south of Mexico Airport (MYJ), power poles were knocked down by tree limbs in Vandalia, and a roof was blown off a trailer in Laddonia. Other communities in the storm's path are Scott's Corner, Rush Hill, and Martinsburg.

4. Jun 17, 2022Thunderstorm Wind$50,000
   National Weather Service narrative

   Widespread wind damage between Mexico and Laddonia with numerous trees, tree limbs, as well as power lines blown down. In Mexico, a house sustained moderate roof damage from a fallen tree. Just southwest of Laddonia, a large tree was blown down onto Highway KK, blocking both lanes. Also, several signs were blown down in Mexico.

5. Mar 14, 2025Tornado$50,000
   National Weather Service narrative

   In Madison County, the tornado mostly caused tree damage. The only structural damage was to a residence and an outbuilding on Highway C. From there, the tornado continued northeast before dissipating between the St. Francois River and Madison 418 at approximately 10:57 PM. In Madison County the tornado was rated EF-1 with a path length of 6.75 miles and a maximum path width of 770 yards.

6. Jul 25, 2008Flash Flood$31,000
   National Weather Service narrative

   Between 4 and 5 inches of rain fell in a short amount of time on already saturated soils causing flash flooding. Numerous roads were flooded including Highway 54 in various places between Vandalia and Mexico.

7. Jul 9, 2021Thunderstorm Wind$12,000
   National Weather Service narrative

   Widespread wind damage between Laddonia, Rush Hill and Mexico. One tree was blown down onto Route KK just west of Highway 19. Another tree was blown down onto Route B at 6th Street in Rush Hill. A two foot diameter tree was blown over onto Central Street in Mexico. Also, numerous tree limbs, power lines and power poles were blown over.

8. Aug 12, 2021Thunderstorm Wind$10,000
   National Weather Service narrative

   Thunderstorm winds blew down numerous tree limbs around Mexico and areas to the south and southeast of town.

9. May 25, 1996Thunderstorm Wind$5,000
   National Weather Service narrative

   Skywarn spotters reported trees and power lines down near the Pike County line.

10. Feb 29, 2000Thunderstorm Wind$5,000
    National Weather Service narrative

    Thunderstorm wind gusts destroyed a couple of outbuildings and downed trees.

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

108°F2 times, most recently Jul 30, 1980

All-time low

−24°F3 times, most recently Dec 23, 1989

Warmest night

88°FJun 27, 1914

Coldest day

−8°FDec 22, 1989

Wettest day

5.58 inJul 10, 1991

Snowiest day

17.0 inFeb 2, 2011

Hottest year

2012mean 57.1°F

Coldest year

2014mean 50.2°F

Wettest year

200859.11 in

Driest year

201221.89 in

Snowiest season

60.5 in1977-78

Station Vandalia (USC00238577), 764 ft elevation, 19.3 miles from the population centre. Daily records from 1911 to October 27, 2026; 93.4% 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.

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.

Neighbouring counties

• 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 USC00238577.
• 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.