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Lawrence County, South Dakota

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

Relatively Low overall risk
12th of 66highest risk in South Dakota
$16Mexpected losses a year
15federal declarations
1 in 167homes with flood insurance
Photo: U.S. Geological Survey, public domain

Lawrence County, South Dakota has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 51% of US counties. It ranks 12th of 66 counties in South Dakota. The costliest hazards here are inland flooding, wildfires and cold waves. FEMA estimates about $16 million a year in expected losses, or roughly $627 per resident. Since 1965 it has been included in 15 federal disaster or emergency declarations for natural events (11 major disasters). The most recent was in October 2019 (severe storms, tornadoes and flooding). Fewer than 1 in 100 homes here carry federal flood insurance (78 policies). Since 1978, federal flood insurance has paid about $277,000 on 38 claims here.

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

Top risks in Lawrence County

$8.5 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.

Wildfire

Moderate
$2.4 million a yearExpected losses. Damaging events about once every 215 years.
  • Clear dry plants and debris within 5 feet of the house.
  • Get home insurance quotes early; availability varies by area.
$1.4 million a yearExpected losses. Damaging events about 4 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 floodingLow57.1
$8M
WildfireModerate93.2
$2M
Cold waveLow58.3
$1M
HailModerate84.3
$1M
Strong windModerate62.8
$809K
TornadoLow37.8
$794K
LightningModerate73.0
$563K
Winter weatherHigh89.4
$397K
EarthquakeVery Low38.1
$140K
Heat waveVery Low16.9
$46K
Ice stormVery Low8.3
$4K
LandslideLow63.9
$4K
DroughtVery Low15.4
$773
AvalancheVery Low10.5
$9

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 relatively moderate in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Flood5
Severe Storm5
Fire3
Coastal Storm1
Snowstorm1

Most recent

Oct 7, 2019Severe Storms, Tornadoes, and FloodingMajor disaster
Nov 8, 2013Severe Winter Storm, Snowstorm, and FloodingMajor disaster
Jun 28, 2013Severe Storms, Tornado, and FloodingMajor disaster
Jul 9, 2008Severe Storms and FloodingMajor disaster
May 22, 2008Severe Winter Storm and Record and Near Record SnowMajor disaster
Jul 21, 2007Box Elder FireFire management
Sep 10, 2005Hurricane Katrina EvacuationEmergency
Apr 19, 2005Sd Wildfire Camp FiveFire management
Jun 29, 2002Grizzly Gulch FireFire management
Apr 7, 1997Severe Flooding, Sever Winter Storms,Heavy Rains High WindsMajor disaster
Show all 15
Jan 10, 1997Severe Winter Storms and Blizzard ConditionsMajor disaster
May 26, 1995FloodingMajor disaster
Jun 25, 1976Flash Flooding & MudslidesMajor disaster
Jun 10, 1972Heavy Rains & FloodingMajor disaster
May 26, 1965FloodingMajor disaster

South Dakota also had 46 statewide declarations that did not name single counties.

Storm history since 1953

Tornado risk by county ›

The National Weather Service has logged 716 storm reports in Lawrence County since 1953, with 1 death and 8 injuries and about $19.9 million in reported damage. The strongest on record here was an F3 tornado on July 12, 1965.

20tornadoes
544hail reports, largest 4.5 inches
115damaging thunderstorm winds
26floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jul 12, 1965F3–0 / 0
Jul 23, 1969F2–0 / 0
Jun 20, 1968F2–0 / 0
Jul 7, 1969F2–0 / 0
Jul 6, 2020EF2Oneill Pass0 / 0

Most damaging storms

DateTypeNearDamage
Aug 1, 2000Thunderstorm WindSpearfish$10M
Jul 31, 2011HailSpearfish$2M
Jun 29, 2018HailDeadwood$2M
May 17, 2013HailDeadwood$2M
Jun 21, 2003HailSpearfish$1M
Jun 4, 2008FloodGalena$1M

Source: NOAA Storm Events Database, county-based reports through Jul 29, 2026. 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.

Flood insurance in Lawrence County

Check your address flood zone ›
0.6%of homes have federal flood insurance (78 policies)
8.7%of homes in mapped high-risk flood zones are insured
$276,733paid on 38 flood claims since 1978
2008costliest year, with $204,541 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 Lawrence County

$346,500median home value (South Dakota $257,400, US $332,700)
1987median year homes were built (South Dakota 1980, US 1980)
42%of homes built before 1980, before many modern wind, quake and flood building rules
9.4%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; 14,840 housing units.

Compare in South Dakota

All 66 ›
Largest countiesOverall riskTop hazard
Minnehaha CountyModerateTornado
Pennington CountyLowInland flooding
Lincoln CountyLowTornado
Brown CountyLowCold wave
Brookings CountyLowInland flooding
Meade CountyLowInland flooding
Codington CountyLowInland flooding
Lawrence CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Pennington CountyLow19
Meade CountyLow19
Butte CountyVery Low19
Crook County, WYVery Low5
Weston County, WYVery Low5

Common questions about Lawrence County

What is the biggest natural hazard in Lawrence County?

Inland flooding has the highest expected yearly losses in Lawrence County, about $8.5 million a year in FEMA's estimate. Wildfire is second at $2.4 million.

How many federal disasters has Lawrence County had?

Lawrence County has been included in 15 federal disaster or emergency declarations for natural events since 1965, including 11 major disasters. The most recent was Severe Storms, Tornadoes, and Flooding in October 2019.

Is Lawrence County a high-risk place to live?

Its overall rating is Relatively Low, 12th highest of 66 in South Dakota. 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 Lawrence County?

Standard home insurance does not cover flooding. About 1 in 167 homes in Lawrence 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 Lawrence County had?

NOAA records list 20 tornadoes in Lawrence County since 1950. The strongest was an F3 tornado on July 12, 1965. The weather service has also logged 544 hail reports and 26 floods here.

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.