Mandan, ND
Local storm history & FEMA National Risk Index data
Mandan is rated Relatively Low for overall natural hazard risk — lower risk than most US counties — based on FEMA's National Risk Index for Morton County, ND. The county's highest-rated hazards are hail, winter weather, and ice storm.
Storm events near Mandan
NOAA-recorded tornado, hail, and flood events within 25 miles of Mandan's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Mandan 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 Morton County's FEMA National Risk Index scores, covering Mandan along with the rest of the county, not a Mandan-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 73.9 | Relatively Low |
| Inland Flooding | 40.4 | Relatively Low |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 6.9 | Very Low |
| Heat Wave | 28 | Very Low |
| Tornado | 57.3 | Relatively Low |
| Avalanche | — | Not Applicable |
| Cold Wave | 80.5 | Relatively Moderate |
| Drought | 23.4 | Very Low |
| Hail | 95.8 | Relatively High |
| Hurricane | — | Not Applicable |
| Ice Storm | 85 | Relatively High |
| Landslide | 38.4 | Very Low |
| Lightning | 23.7 | Very Low |
| Strong Wind | 51.3 | Relatively Low |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 95.5 | Relatively High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Morton County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Morton County:
Frequently asked questions
What natural hazards is Mandan, ND at risk of?
Mandan 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 Morton County, where Mandan is located, are hail, winter weather, and ice storm.
What is Mandan's biggest natural hazard risk?
Hail is the highest-rated hazard for Morton County, where Mandan is located, scoring 95.8 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Mandan a high-risk area for natural disasters?
No — Mandan carries lower risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Low" for Morton County.
Has Mandan had tornadoes, hail, or flooding?
NOAA has recorded 11 tornado, 150 hail, 7 inland flooding events within 25 miles of Mandan since 2016.