Owosso, MI
Local storm history & FEMA National Risk Index data
Owosso is rated Relatively Low for overall natural hazard risk — lower risk than most US counties — based on FEMA's National Risk Index for Shiawassee County, MI. The county's highest-rated hazards are strong wind, tornado, and cold wave.
Storm events near Owosso
NOAA-recorded tornado, hail, and flood events within 25 miles of Owosso's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Owosso itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Shiawassee County's FEMA National Risk Index scores, covering Owosso along with the rest of the county, not a Owosso-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 8.6 | Very Low |
| Inland Flooding | 55.2 | Relatively Low |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 39.4 | Very Low |
| Heat Wave | 55.7 | Relatively Low |
| Tornado | 86.2 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 85.6 | Relatively Moderate |
| Drought | 0 | No Rating |
| Hail | 64.1 | Relatively Low |
| Hurricane | 39.5 | Very Low |
| Ice Storm | 68 | Relatively Moderate |
| Landslide | 42.6 | Very Low |
| Lightning | 32 | Relatively Low |
| Strong Wind | 93.8 | Relatively High |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 22.2 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Shiawassee County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Shiawassee County:
Frequently asked questions
What natural hazards is Owosso, MI at risk of?
Owosso is rated Relatively Low for overall natural hazard risk by FEMA's National Risk Index — lower risk than most US counties. The highest-rated hazards for Shiawassee County, where Owosso is located, are strong wind, tornado, and cold wave.
What is Owosso's biggest natural hazard risk?
Strong Wind is the highest-rated hazard for Shiawassee County, where Owosso is located, scoring 93.8 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Owosso a high-risk area for natural disasters?
No — Owosso carries lower risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Low" for Shiawassee County.
Has Owosso had tornadoes, hail, or flooding?
NOAA has recorded 13 tornado, 29 hail, 11 inland flooding events within 25 miles of Owosso since 2016.