Gasconade County

Every recorded tornado

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

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.

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.

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 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.

More event types since 1996

Costliest events since 1996

1. Jun 6, 1997Hail$1.0 million
   National Weather Service narrative

   Hail up to 2 inches in diameter pounded parts of Owensville. Initial reports estimated the damage to be at least 1 million. The storm cut a relatively narrow swath from the industrial park on the north side to town, then to the south-southeast through Memorial Park and the Oak Brook Subdivision. In the Industrial Park, businesses suffered varying degrees of damage to roofs, vent tops and gutters. Windows were broken at homes including one large window at the Gasconade Manor Nursing Home. At Owensville High School, skylights in the gymnasium roof were cracked and two large air conditioner coils damaged. Numerous vehicles were damaged. Insurance company officials commented that most…

2. Dec 27, 2015Flood$160,000
   National Weather Service narrative

   Between 6 and 9 inches of rain fell across Gasconade County during a 2 day period. All of this rain caused the creeks and rivers to rise. The Gasconade River and Missouri River went into flood with several points cresting at major levels. Almost 20 structures were either damaged or destroyed from the river flooding. Damage estimates so far were around $160 Thousand.

3. Jan 12, 2007Ice Storm, Gasconade$137,000
   National Weather Service narrative

   An arctic boundary settled south of the area on the 12th and 13th of January bringing subfreezing temperatures to the northwestern half of the county warning area. Three rounds of precipitation occurred during this period, with the first being the most destructive of all. Significant tree and limb damage was reported as a result of this storm, together with widespread power outages. More than 100,000 homes and businesses lost power during this storm. About 1.5 inches of sleet fell and a 1/2 inch of ice accumulation hit parts of Central and Northeast Missouri. From 1/4 to 1/2 inch of ice accumulated from freezing rain across Eastern Missouri and parts of Southwest Illinois.…

4. Jun 26, 2008Lightning$125,000
   National Weather Service narrative

   Lightning struck a house in the Peaceful Valley Lake area around 530 am, but smoldered til around 10 am before neighbors saw the smoke. Fortunately no one was home at the time when the fire fully broke out. The home was completely destroyed. One fire fighter sustained second degree burns to his neck when burning debris fell down the back of his coat.

5. Sep 18, 2010Flash Flood$30,000
   National Weather Service narrative

   Between 3 and 5 inches of rain fell onto already saturated soils causing flash flooding. Frene Creek in Hermann rose quickly and came out of its banks next to the city park where dozens of people were camping for the third annual Hermann Cyclocross race. The police and fire department were able to get everyone out of the campground, though two vehicles were flooded as well as numerous tents, bikes and one popup camper that could not be moved quick enough. No injuries were reported.

6. May 6, 2003Thunderstorm Wind$20,000
   National Weather Service narrative

   Thunderstorm winds caused damage in the Owensville area. Trees and power lines were down mainly on the north side of town. Just east of town, a hay barn was destroyed and the tin roof of a shed was missing.

7. Apr 15, 2023Thunderstorm Wind$15,000
   National Weather Service narrative

   Thunderstorm winds caused damage across the southern portions of Gasconade County. Several large trees were blown down as well as tree limbs and power lines. One large tree fell across Highway 19 about 4 miles northwest of Oak Hill.

8. Dec 10, 2021Thunderstorm Wind$15,000
   National Weather Service narrative

   Widespread wind damage between Morrison and Gasconade. A number of trees were blown down onto Highway 100.

9. Jul 9, 2002Thunderstorm Wind$10,000
   National Weather Service narrative

   A large cottonwood tree was blown down onto a home just west of Gasconade. The home suffered moderate roof damage.

10. May 8, 2007Flood$5,000
    National Weather Service narrative

    The Missouri River flooded parts of the northern border of Gasconade County from Gasconade to Hermann. Two city parks in Hermann were flooded, otherwise flooding was limited to farmland along the river and to some roads near the river in the Hermann area.

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

111°FJul 30, 1980

All-time low

−21°FDec 23, 1989

Warmest night

80°F2 times, most recently Jul 9, 1984

Coldest day

−8°FDec 24, 1983

Wettest day

6.92 inAug 11, 1993

Snowiest day

15.0 inFeb 27, 1984

Hottest year

1972mean 58.3°F

Coldest year

1996mean 50.8°F

Wettest year

199371.55 in

Driest year

198023.36 in

Snowiest season

26.0 in1988-89

Station Freedom (USC00233043), 805 ft elevation, 11.5 miles from the population centre. Daily records from 1962 to October 26, 2026; 94.2% 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 USC00233043.
• 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.
• 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.