Marion County, Indiana: hazard risk

FEMA rates Marion County's overall risk Relatively High (score 97.5 of 100, higher than 97% of rated U.S. counties); 8 of its 14 hazards are rated Relatively High or Very High, led by tornado, strong wind, lightning. Its storm record holds 1,218 events since 1950.

FEMA's rating for each hazard

These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.

FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).

National Risk Index (December 2025), Marion County, by FEMA's rating, then score
HazardRisk ratingScoreExpected annual loss
TornadoVery High99.0$39M
Strong WindVery High98.7$6.8M
LightningVery High96.9$2.4M
Cold WaveRelatively High98.7$27M
Heat WaveRelatively High98.7$20M
Riverine FloodingRelatively High98.3$163M
Winter WeatherRelatively High93.7$570K
Ice StormRelatively High85.3$610K
EarthquakeRelatively Moderate96.4$22M
HailRelatively Moderate93.6$2.4M
LandslideRelatively Low65.9$4K
DroughtRelatively Low37.0$50K
HurricaneVery Low34.1$19K
WildfireVery Low22.3$9K

Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.

What the record holds

Storm records by hazard, with the county's rank by days with a record per 1,000 sq mi over each hazard's complete period
HazardRecordsDeathsDamageRank in stateRank in U.S.
Severe thunderstorm wind5177$11M2nd of 9128th of 3,080
Hail3730$51K1st of 9128th of 3,080
Floods1262$36M22nd of 91164th of 3,080
Winter storms689$2.3M46th of 911094th of 3,077
Tornadoes470$208M2nd of 9124th of 3,080
High wind and dust storms391$2.5M10th of 91734th of 3,080
Lightning223$3.0M3rd of 9192nd of 3,080
Extreme cold72–25th of 911234th of 3,076
Heavy rain70–10th of 91720th of 3,080
Drought60–46th of 911808th of 3,063
Heat51–17th of 911285th of 3,076

Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.

The full Marion County record: every hazard by year and month, the deadliest events and FEMA's declarations.

Next