Home › Missouri › Gasconade County

Gasconade County, Missouri

Natural disaster risk, federal disaster history and flood insurance facts.

Very Low overall risk
80th of 115highest risk in Missouri
$12Mexpected losses a year
19federal declarations
1 in 250homes with flood insurance
Photo: U.S. Geological Survey, public domain

Gasconade County, Missouri has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 68% of US counties. It ranks 80th of 115 counties in Missouri. The costliest hazards here are inland flooding, heat waves and cold waves. FEMA estimates about $12 million a year in expected losses, or roughly $805 per resident. Since 1973 it has been included in 19 federal disaster or emergency declarations for natural events (12 major disasters). The most recent was in August 2026 (severe storms, straight-line winds, tornadoes and flooding). Only 36 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $8.1 million on 445 claims here.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Gasconade County

$6.8 million a yearExpected losses. Damaging events about once a year.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.

Heat wave

Moderate
$1.7 million a yearExpected losses. Damaging events about 12 times a year.
  • Check that cooling works before summer.
  • Know where the nearest cooling center is.
$1.1 million a yearExpected losses. Damaging events about 2 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
HazardRatingScoreExpected loss a year
Inland floodingLow46.1
$7M
Heat waveModerate79.4
$2M
Cold waveLow49.4
$1M
TornadoLow35.2
$781K
EarthquakeLow62.7
$613K
Strong windLow28.7
$322K
HailLow43.3
$235K
Ice stormLow57.3
$136K
LightningVery Low22.9
$91K
Winter weatherLow40.2
$53K
DroughtLow35.5
$50K
WildfireVery Low34.3
$21K
HurricaneVery Low15.9
$5K
LandslideLow64.9
$4K

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively low and community resilience is very high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Gasconade County. 2020s bar runs to November 2026.

By type

Severe Storm7
Flood7
Severe Ice Storm3
Drought1
Hurricane1

Most recent

Aug 3, 2026Severe Storms, Straight-Line Winds, Tornadoes, and FloodingMajor disaster
Jul 9, 2019Severe Storms, Tornadoes, and FloodingMajor disaster
Jun 2, 2017Severe Storms, Tornadoes, Straight-Line Winds and FloodingMajor disaster
Jan 21, 2016Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Jan 2, 2016Severe Storms, Tornadoes, Straight-Line Winds, and FloodingEmergency
Jun 30, 2011FloodingEmergency
Feb 3, 2011Severe Winter StormEmergency
Jan 30, 2009Severe Winter StormEmergency
Mar 19, 2008Severe Storms and FloodingMajor disaster
Dec 12, 2007Severe Winter StormsEmergency
Show all 19
Jan 15, 2007Severe Winter Storms and FloodingMajor disaster
Sep 10, 2005Hurricane Katrina EvacuationEmergency
May 6, 2003Severe Storms, Tornadoes, and FloodingMajor disaster
May 12, 2000Severe Thunderstorms and Flash FloodingMajor disaster
Jun 2, 1995Severe Storms, Tornadoes, Hail, FloodingMajor disaster
Jul 9, 1993Severe Storms & FloodingMajor disaster
Oct 14, 1986Severe Storms & FloodingMajor disaster
Sep 24, 1976DroughtEmergency
Apr 19, 1973Heavy Rains, Tornadoes & FloodingMajor disaster

Missouri also had 5 statewide declarations that did not name single counties.

Storm history since 1959

Tornado risk by county ›

The National Weather Service has logged 311 storm reports in Gasconade County since 1959, with 0 deaths and 14 injuries and about $27.3 million in reported damage. The strongest on record here was an F2 tornado on April 29, 1984.

8tornadoes
137hail reports, largest 3 inches
131damaging thunderstorm winds
31floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Apr 29, 1984F2–10 / 0
May 13, 1985F1–0 / 0
Dec 20, 1967F1–0 / 0
Apr 16, 1982F1–0 / 0
May 1, 1983F1–0 / 0

Most damaging storms

DateTypeNearDamage
Apr 29, 1984Tornado–$25M
Jun 6, 1997HailOwensville$1M
Apr 15, 1994Thunderstorm WindSwiss$500K
May 13, 1985Tornado–$250K
Dec 27, 2015FloodMt Sterling$160K
Jun 26, 2008LightningCanaan$125K

Source: NOAA Storm Events Database, county-based reports through May 26, 2024. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Hurricanes and tropical storms

Hurricane risk by county ›

Since 1923, 0 hurricanes and 1 tropical storm have passed within 65 miles of the center of Gasconade County. The strongest was an unnamed storm in 1923, with top winds near 40 mph about 50 miles away.

0hurricanes
0major hurricanes (Category 3+)
1tropical storms
1923most recent: unnamed storm

Strongest storms nearby

DateStormStrengthClosest
Oct 17, 1923UnnamedTropical storm, 40 mph50 mi

Most recent storms

DateStormStrengthClosest
Oct 17, 1923UnnamedTropical storm, 40 mph50 mi

Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.

Flood insurance in Gasconade County

Check your address flood zone ›
0.4%of homes have federal flood insurance (36 policies)
8.1%of homes in mapped high-risk flood zones are insured
$8.1 millionpaid on 445 flood claims since 1978
1993costliest year, with $2.1 million paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Gasconade County

$179,900median home value (Missouri $230,300, US $332,700)
1976median year homes were built (Missouri 1978, US 1980)
57%of homes built before 1980, before many modern wind, quake and flood building rules
9.6%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 7,574 housing units.

Compare in Missouri

All 115 ›
Largest countiesOverall riskTop hazard
St. Louis CountyHighHeat wave
Jackson CountyHighInland flooding
St. Charles CountyModerateInland flooding
St. Louis CityHighHeat wave
Greene CountyModerateInland flooding
Clay CountyModerateInland flooding
Jefferson CountyModerateInland flooding
Boone CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Franklin CountyModerate22
Phelps CountyLow23
Warren CountyLow15
Crawford CountyLow22
Osage CountyVery Low28
Montgomery CountyVery Low24
Maries CountyVery Low26

Common questions about Gasconade County

What is the biggest natural hazard in Gasconade County?

Inland flooding has the highest expected yearly losses in Gasconade County, about $6.8 million a year in FEMA's estimate. Heat wave is second at $1.7 million.

How many federal disasters has Gasconade County had?

Gasconade County has been included in 19 federal disaster or emergency declarations for natural events since 1973, including 12 major disasters. The most recent was Severe Storms, Straight-Line Winds, Tornadoes, and Flooding in August 2026.

Is Gasconade County a high-risk place to live?

Its overall rating is Very Low, 80th highest of 115 in Missouri. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Gasconade County?

Standard home insurance does not cover flooding. About 1 in 250 homes in Gasconade County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Gasconade County had?

NOAA records list 8 tornadoes in Gasconade County since 1950. The strongest was an F2 tornado on April 29, 1984. The weather service has also logged 137 hail reports and 31 floods here.

How many hurricanes have hit Gasconade County?

NOAA's hurricane records show 0 hurricanes and 1 tropical storm passing within 65 miles of the center of Gasconade County. The strongest was an unnamed storm in 1923, with winds near 40 mph.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.