Natural disaster risk in Iosco County, Michigan
Michigan · population 25,202 · FIPS 26069
Overall: very low risk
Iosco County has a composite risk score of 37.8 out of 100 — higher than 37% of US counties. It ranks 53 of 83 in Michigan (1 = highest risk). Its highest-rated hazards are winter weather, cold wave, lightning.
Drought now: No: no drought or dryness
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Iosco County is in drought or abnormally dry (none of D0 to D4). That has been so for 30 weeks in a row.
Drought in Iosco County: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Very low 37.8 |
| Expected annual loss About $8.3 million a year, on average, across all 18 hazards. |
Very low 27.7 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Very high 87 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Relatively high 72.2 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in Iosco County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Winter weather | Relatively moderate 84 |
| Cold wave | Relatively moderate 68 |
| Lightning | Relatively moderate 65 |
| Strong wind | Relatively moderate 52 |
| Hail | Relatively low 54 |
| Inland (riverine) flooding | Relatively low 52 |
| Tornado | Relatively low 36 |
| Wildfire | Very low 60 |
| Coastal flooding | Very low 41 |
| Hurricane | Very low 40 |
| Landslide | Very low 31 |
| Ice storm | Very low 26 |
| Earthquake | Very low 23 |
| Heat wave | Very low 19 |
| Avalanche | Not applicable |
| Drought | No rating |
| Tsunami | Insufficient data |
| Volcanic activity | Not applicable |
FEMA disaster declarations for Iosco County
Federal declarations that designated Iosco County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. Iosco County has been named in 1 FEMA declaration since 1 Jan 2024. The latest is DR-4925-MI (Severe Storms, Tornadoes, and Flooding), declared 30 Jun 2026.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| DR-4925-MI | Major disaster | Severe Storms, Tornadoes, and Flooding | 30 Jun 2026 | Yes |
All FEMA declarations in Michigan, with estimated apply-by dates · Open FEMA deadlines
This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in Iosco County, Michigan?
FEMA's National Risk Index rates the overall risk in Iosco County as very low, with a score of 37.8 out of 100 (higher than 37% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in Iosco County?
The hazards rated highest for Iosco County are winter weather (relatively moderate), cold wave (relatively moderate), lightning (relatively moderate).
What is the flood risk in Iosco County?
FEMA rates inland (river and rain) flooding risk in Iosco County as relatively low, and coastal flooding risk as very low. For a specific property, check the FEMA flood map and your local floodplain office.
Has Iosco County had a FEMA disaster declaration?
Yes. Iosco County has been named in 1 FEMA declaration since 1 Jan 2024. The latest is DR-4925-MI (Severe Storms, Tornadoes, and Flooding), declared 30 Jun 2026.
Is Iosco County in a drought?
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Iosco County is in drought or abnormally dry (none of D0 to D4). That has been so for 30 weeks in a row.
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