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St. Joseph County, Michigan

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

Relatively Low overall risk
35th of 83highest risk in Michigan
$19Mexpected losses a year
6federal declarations
1 in 333homes with flood insurance
Photo: U.S. Geological Survey, public domain

St. Joseph County, Michigan has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 59% of US counties. It ranks 35th of 83 counties in Michigan. The costliest hazards here are inland flooding, tornadoes and cold waves. FEMA estimates about $19 million a year in expected losses, or roughly $311 per resident. Since 1978 it has been included in 6 federal disaster or emergency declarations for natural events (2 major disasters). The most recent was in September 2005 (Hurricane Katrina Evacuation). Fewer than 1 in 100 homes here carry federal flood insurance (84 policies). Since 1978, federal flood insurance has paid about $1.6 million on 110 claims here, including $913,000 for floods in 2018.

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

Top risks in St. Joseph County

$11.4 million a yearExpected losses. Damaging events about once every 7 years.
  • 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.
$1.9 million a yearExpected losses. Damaging events about once every 4 years.
  • Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
  • Turn on emergency alerts on your phone and keep a weather radio.
$1.5 million a yearExpected losses. Damaging events about 3 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 floodingLow68.1
$11M
TornadoLow63.5
$2M
Cold waveLow63.9
$2M
Strong windModerate82.4
$1M
HailModerate85.2
$1M
LightningModerate77.4
$602K
EarthquakeLow60.8
$442K
DroughtLow62.0
$296K
Heat waveVery Low33.8
$156K
Ice stormLow50.2
$80K
Winter weatherLow46.4
$53K
HurricaneVery Low38.0
$25K
WildfireVery Low17.0
$6K
LandslideVery Low57.7
$2K

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 moderate and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Snowstorm3
Flood1
Severe Storm1
Hurricane1

Most recent

Sep 7, 2005Hurricane Katrina EvacuationEmergency
Jun 30, 2004Severe Storms, Tornadoes, and FloodingMajor disaster
Jan 10, 2001SnowEmergency
Jan 27, 1999Mi - Severe Weather 1/2 /99Emergency
Sep 8, 1980Severe Storms & FloodingMajor disaster
Jan 27, 1978Blizzards & SnowstormsEmergency

Michigan also had 6 statewide declarations that did not name single counties.

Storm history since 1953

Tornado risk by county ›

The National Weather Service has logged 375 storm reports in St. Joseph County since 1953, with 5 deaths and 17 injuries and about $3.3 million in reported damage. The strongest on record here was an EF2 tornado on June 5, 2010 near Constantine.

18tornadoes
73hail reports, largest 4 inches
274damaging thunderstorm winds
4floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 5, 2010EF2Constantine0 / 0
Jul 9, 1966F2–0 / 0
Mar 12, 1976F2–0 / 0
May 17, 1953F2–0 / 0
Jul 6, 1955F2–0 / 0

Most damaging storms

DateTypeNearDamage
Feb 20, 2018FloodFactoryville$680K
Sep 13, 2008FloodHowardsville$500K
Oct 24, 2001TornadoWhite Pigeon$322K
Jun 5, 2010TornadoConstantine$300K
Nov 10, 1998Thunderstorm WindColon$150K
Aug 25, 1998Thunderstorm WindConstantine$100K

Source: NOAA Storm Events Database, county-based reports through Jul 3, 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 St. Joseph County

Check your address flood zone ›
0.3%of homes have federal flood insurance (84 policies)
16.5%of homes in mapped high-risk flood zones are insured
$1.6 millionpaid on 110 flood claims since 1978
2018costliest year, with $913,229 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 St. Joseph County

$178,300median home value (Michigan $231,600, US $332,700)
1970median year homes were built (Michigan 1972, US 1980)
66%of homes built before 1980, before many modern wind, quake and flood building rules
7.6%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; 27,302 housing units.

Compare in Michigan

All 83 ›
Largest countiesOverall riskTop hazard
Wayne CountyHighInland flooding
Oakland CountyHighInland flooding
Macomb CountyHighInland flooding
Kent CountyModerateInland flooding
Genesee CountyModerateInland flooding
Washtenaw CountyModerateInland flooding
Ottawa CountyModerateInland flooding
Ingham CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Kalamazoo CountyModerate9
Elkhart County, INModerate11
Calhoun CountyLow6
Van Buren CountyLow11
Cass CountyLow7
Branch CountyLow4
LaGrange County, INLow10

Common questions about St. Joseph County

What is the biggest natural hazard in St. Joseph County?

Inland flooding has the highest expected yearly losses in St. Joseph County, about $11.4 million a year in FEMA's estimate. Tornado is second at $1.9 million.

How many federal disasters has St. Joseph County had?

St. Joseph County has been included in 6 federal disaster or emergency declarations for natural events since 1978, including 2 major disasters. The most recent was Hurricane Katrina Evacuation in September 2005.

Is St. Joseph County a high-risk place to live?

Its overall rating is Relatively Low, 35th highest of 83 in Michigan. 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 St. Joseph County?

Standard home insurance does not cover flooding. About 1 in 333 homes in St. Joseph 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 St. Joseph County had?

NOAA records list 18 tornadoes in St. Joseph County since 1950. The strongest was an EF2 tornado on June 5, 2010 near Constantine. The weather service has also logged 73 hail reports and 4 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.