Grant County, IN Environment & Hazard Risk
Relatively Low natural hazard risk, led by tornado. 391 storm events since 1996.
- Expected yearly loss
- $23.08M
- Relatively Low nationally
- Storm events since 1996
- 391
- Most often thunderstorm wind
- Flood insurance policies
- 66
- 0.2% of homes
- Hurricanes nearby
- 0
- 1 tropical storm or stronger since 1902
Natural hazard risk
FEMA National Risk Index, December 2025
Overall risk
Relatively Low
Score 69.4 of 100
Social vulnerability
Relatively High
Score 67.9 of 100
Community resilience
Relatively High
Score 69.2 of 100
Community resilience runs the other way: a higher rating means a community can recover faster.
Building value exposed: $15.25B · Agriculture value exposed: $153M · Risk-adjusted yearly loss: $29.53M
Risk by hazard
- TornadoRelatively Moderate$5.4M/yr expected annual loss, about once every 3 years
- HailRelatively Moderate$917K/yr expected annual loss, about 4.5 events a year
- EarthquakeRelatively Low$1.14M/yr expected annual loss, about once every 642 years
- Heat waveRelatively Low$1.02M/yr expected annual loss, about 5.3 events a year
- Winter weatherRelatively Moderate$96.91K/yr expected annual loss, about 9.7 events a year
- Strong windRelatively Moderate$707K/yr expected annual loss, about 5.2 events a year
- DroughtRelatively Low$270K/yr expected annual loss, about 1.7 events a year
- Cold waveRelatively Low$971K/yr expected annual loss, about 3.8 events a year
- LightningRelatively Low$183K/yr expected annual loss, about 44 events a year
- Ice stormRelatively Low$51.27K/yr expected annual loss, about once every 1 year
- LandslideVery Low$587/yr expected annual loss, about once every 13 years
- HurricaneVery Low$13.94K/yr expected annual loss, about once every 87 years
- WildfireVery Low$4,381/yr expected annual loss, about once every 84,065 years
Bars show the national percentile score (0 to 100) for each hazard. Dollar figures are expected annual losses to buildings, people and crops. Not rated here: avalanche, coastal flooding, riverine flooding, tsunami, volcanic activity.
Flood risk and insurance
National Flood Insurance Program and FEMA flood maps
Check the flood zone for an address
- Homes with flood insurance
- 66 of 27,620 (0.2%)
- Homes in high-risk flood zones
- 388
- Insured in high-risk zones
- 44 (11%)
- Flood claims since 1978
- 139
- Claims paid since 1978
- $1.71M
Flood claims paid per year
- Flooding$154K · 17 claims
- 2026-08-Indiana-Flooding$0 · 4 claims
Storm history
Since 1996: 391 events, 3 deaths, $5.32M in damage
- Thunderstorm Wind170
- Hail101
- Winter Weather26
- Winter Storm20
- Tornado16
- Heavy Snow16
- High Wind10
- Flood10 · 3 deaths
- Flash Flood6
- Extreme Cold/Wind Chill5
Events per year
29 tornadoes on record (EF0 2, EF1 4, EF2 3, EF3 1, F0 6, F1 7, F2 3, F3 1, F4 2).
Most damaging storms
Since 1996, ranked by deaths, injuries and damage
- Flood01/23/1999
Grant
2 deaths
What happened
During the evening of the 22nd an automobile containing a mother and her 9 year-old son was swept into Grassy Fork Creek in southwestern Grant County. They were not able to escape from the car and drowned. On the 22nd ice on the Tippecanoe River took skirting from mobile homes in low-lying areas. On the 23rd a man (age unknown) was missing and presumed dead possibly as a result of flooding in Adams County. On the morning of the 24th, an ice jam which swept up a boat, jet ski, and several trees, formed at a bridge on the Tippecanoe River. Basements were flooded in Warren Indiana as a result of flooding on the Salamonie River.
- Flood01/14/2013
Fowlerton, Grant County
1 death
What happened
Local media reported that a 19 year old male lost control of his vehicle on State road 26, east of Fairmount, Indiana after encountering high water from a nearby stream that had flowed over the road. The vehicle flipped and the passenger compartment became submerged. A passing motorist contacted 911 and when responders arrived only one foot of the vehicle was visible. Deputies waded 30 to 40 feet off the road into roughly 3 feet of water and attached tow lines and subsequently pulled the vehicle out. The male was found unresponsive in the vehicle and was later pronounced dead at a local hospital.
- Flash Flood08/05/1998
Marion, Grant County
$1.5M damage
What happened
EXTENSIVE FLOODING THROUGHOUT MARION AND THE COUNTY. MANY ROADS AND BRIDGES UNDER WATER. NUMEROUS RESIDENCES WERE EVACUATED ALONG THE MISSISSINEWA RIVER AS ARMY NATIONAL GUARDSMEN SANDBAGGED A WEAKENING DIKE ON THE EAST SIDE OF MARION. THE DIKE HELD BUT SEVERAL HOMES SUSTAINED WATER DAMAGE.
- Thunderstorm Wind55 kt wind05/31/2008
Sims, Grant County
1 injured, $10K damage
What happened
Straight-line thunderstorms winds were determined to be the cause of damage in the 9000 block of West 400 South, just to the south of Swayzee. A carport at a residence at 9740 West 400 South was destroyed with a trailer suffering damage. Just across and down the road a tree fell down onto a house at 9800 W 400 S. A woman was going down her stairs taking shelter when she fell and hurt her arm.
- Thunderstorm Wind12/07/1998
Marion, Grant County
1 injured, $10K damage
What happened
AUTOMOBILE SIGNIFICANTLY DAMAGED WHEN PART OF A TREE FELL ACROSS IT.
- Flood03/01/2011
Stonecrest, Grant County
$1M damage
What happened
Flooding along the Mississinewa River continued into the first day of March. High water from the river spilled over into eastern portions of Marion as well as into the Stonecrest Mobile Home Community, where residents woke to flooded residences and roads. Sufficient water covered the entrances to the community to stop residents from entering and exiting the area, as well as causing school buses to divert away from the area. While no exact damage figures were provided, damage likely exceeded 1 million dollars from a combination of structural and roadway damage.
Latest storm reports
Newest first
- Thunderstorm Wind59 kt wind07/27/2026
Marion, Grant County
$7,500 damage
- Thunderstorm Wind61 kt wind07/27/2026
Gas City, Grant County
$1,000 damage
- Thunderstorm Wind61 kt wind07/27/2026
Home Corner, Grant County
$5,000 damage
- Thunderstorm Wind59 kt wind07/27/2026
Home Corner, Grant County
$1,000 damage
- Thunderstorm Wind52 kt wind07/27/2026
Home Corner, Grant County
$1,000 damage
- Thunderstorm Wind59 kt wind07/27/2026
Swayzee, Grant County
$1,000 damage
- Thunderstorm Wind61 kt wind07/27/2026
Home Corner, Grant County
$5,000 damage
- Thunderstorm Wind61 kt wind07/27/2026
Jonesboro, Grant County
$10K damage
Hurricanes and tropical storms
Storms whose track crossed Grant County, with the wind when it passed
- Unnamed storm (1902)06/21/1902 · Landfall: TXTropical storm40 mph nearby
Drinking water
10 community water systems serve about 44,531 people. Violations since 2021.
4 systems had health-based violations, such as a contaminant over the legal limit or a missed treatment step. 4 systems had a violation of any kind still open at last report.
- Marion City Water WorksServes 28,363 · Groundwater · Local governmentNo health violations
- Gas City Water DepartmentServes 6,000 · Groundwater · Local government1 health violation+7 monitoring or reporting
- Upland Water DepartmentServes 3,308 · Groundwater · Local governmentNo health violations+1 monitoring or reporting
- Fairmount Water WorksServes 2,756 · Groundwater · Local governmentNo health violations+2 monitoring or reporting
- Jonesboro Water DepartmentServes 2,034 · Groundwater · Local governmentNo health violations+11 monitoring or reporting
- Swayzee Water UtilityServes 975 · Groundwater · Local governmentNo health violations+28 monitoring or reporting
- Van Buren Municipal UtilitiesServes 864 · Groundwater · Local government3 health violations+5 monitoring or reporting
- Colonial Crest LLCServes 101 · Groundwater · PrivateNo health violations
Largest systems by population served. Monitoring and reporting violations mean required tests or notices were late or missing, not that the water was unsafe.
Climate
1991-2020 normals at Marion 2 N, 4 mi from the county center
Summer highs peak around 84°F in Jul and winter lows bottom out near 18°F in Jan. About 41.8 inches of rain falls in a typical year, with 24.5 inches of snow.
| Month | High | Low | Rain | Snow |
|---|---|---|---|---|
| Jan | 33°F | 18°F | 2.85 in | 8.1 in |
| Feb | 37°F | 20°F | 2.15 in | 6.3 in |
| Mar | 48°F | 28°F | 2.87 in | 3.7 in |
| Apr | 61°F | 38°F | 4.10 in | 0.3 in |
| May | 72°F | 49°F | 4.76 in | - |
| Jun | 81°F | 59°F | 4.42 in | - |
| Jul | 84°F | 63°F | 4.33 in | - |
| Aug | 82°F | 61°F | 3.93 in | - |
| Sep | 77°F | 53°F | 3.39 in | - |
| Oct | 64°F | 42°F | 3.12 in | 0.1 in |
| Nov | 50°F | 32°F | 3.26 in | 1.0 in |
| Dec | 38°F | 23°F | 2.58 in | 5.0 in |
| Year | 50°F average | 41.8 in | 24.5 in | |
Pollution sites
1 Superfund site and 8 toxic release facilities in Grant County
Superfund sites
- Marion (Bragg) DumpFinalMarion
Toxic release facilities
- Hartson-Kennedy Inc66,375 lbs released, Marion
- Prysmian Cables & Systems USA LLC45,632 lbs released, Marion
- American Woodmark Corp44,772 lbs released, Gas City
- Ozark Materials LLC an Ingevity Co8,838 lbs released, Marion
- Central Indiana Ethanol LLC3,125 lbs released, Marion
- Atlas Foundry Co Inc347 lbs released, Marion
- Wiley Metal Fabricating Inc.109 lbs released, Marion
- Bahr Brothers Manufacturing103 lbs released, Marion
Total: 169,300 lbs in 2024, 125,701 lbs to air.
Superfund sitesToxic release facilitiesEPA inspections and enforcementAir toxics cancer risk15 historic places
Frequently asked questions
- How risky is Grant County for natural disasters?
- FEMA rates Grant County relatively low for overall natural hazard risk, with expected losses of $23.08M a year. The highest-rated hazards are tornado (relatively moderate), hail (relatively moderate), earthquake (relatively low).
- What storms are most common in Grant County?
- Since 1996, NOAA recorded 391 storm events affecting Grant County, most often thunderstorm wind (170), hail (101), winter weather (26).
- How many tornadoes have hit Grant County?
- 29 tornadoes have been recorded in Grant County since 1950, including 4 rated F3/EF3 or stronger.
- How many homes in Grant County have flood insurance?
- 66 residential flood insurance policies are in force in Grant County, covering about 0.2% of homes. The program has paid $1.71M on 139 claims here since 1978.
- What is the weather like in Grant County?
- At Marion 2 N, average highs reach 84°F in Jul and lows fall to 18°F in Jan, with 41.8 inches of rain a year (1991-2020 normals).
Source: FEMA (National Risk Index, NFIP), NOAA (Storm Events, HURDAT2, Climate Normals), EPA · Last updated 08/01/2026 · Storm counts include events in forecast zones that touch the county. This product uses the FEMA OpenFEMA API, but is not endorsed by FEMA.