Natural disaster risk in Milwaukee County, Wisconsin
Wisconsin · population 939,336 · FIPS 55079
Overall: relatively high risk
Milwaukee County has a composite risk score of 98.4 out of 100 — higher than 98% of US counties. It ranks 1 of 72 in Wisconsin (1 = highest risk). Its highest-rated hazards are cold wave, tornado, winter weather.
Drought now: No: no drought or dryness
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Milwaukee County is in drought or abnormally dry (none of D0 to D4). That has been so for 4 weeks in a row.
Drought in Milwaukee 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. |
Relatively high 98.4 |
| Expected annual loss About $342.1 million a year, on average, across all 18 hazards. |
Relatively high 98.1 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Relatively high 63.8 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Very high 98.6 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in Milwaukee County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Cold wave | Very high 99 |
| Tornado | Very high 98 |
| Winter weather | Very high 96 |
| Heat wave | Relatively high 99 |
| Inland (riverine) flooding | Relatively high 97 |
| Strong wind | Relatively high 94 |
| Hail | Relatively moderate 86 |
| Ice storm | Relatively moderate 77 |
| Lightning | Relatively moderate 61 |
| Earthquake | Relatively low 80 |
| Coastal flooding | Very low 35 |
| Landslide | Very low 30 |
| Wildfire | Very low 29 |
| Hurricane | Very low 18 |
| Drought | Very low 16 |
| Avalanche | Not applicable |
| Tsunami | Insufficient data |
| Volcanic activity | Not applicable |
FEMA disaster declarations for Milwaukee County
Federal declarations that designated Milwaukee County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. Milwaukee County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4923-WI (Severe Storms, Tornadoes, and Flooding), declared 30 Jun 2026.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| DR-4923-WI | Major disaster | Severe Storms, Tornadoes, and Flooding | 30 Jun 2026 | Yes |
| DR-4892-WI | Major disaster | Severe Storms, Straight-Line Winds, Flooding, and Mudslides | 11 Sep 2025 | Yes |
All FEMA declarations in Wisconsin, 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 Milwaukee County, Wisconsin?
FEMA's National Risk Index rates the overall risk in Milwaukee County as relatively high, with a score of 98.4 out of 100 (higher than 98% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in Milwaukee County?
The hazards rated highest for Milwaukee County are cold wave (very high), tornado (very high), winter weather (very high).
What is the flood risk in Milwaukee County?
FEMA rates inland (river and rain) flooding risk in Milwaukee County as relatively high, and coastal flooding risk as very low. For a specific property, check the FEMA flood map and your local floodplain office.
Has Milwaukee County had a FEMA disaster declaration?
Yes. Milwaukee County has been named in 2 FEMA declarations since 1 Jan 2024. The latest is DR-4923-WI (Severe Storms, Tornadoes, and Flooding), declared 30 Jun 2026.
Is Milwaukee County in a drought?
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of Milwaukee County is in drought or abnormally dry (none of D0 to D4). That has been so for 4 weeks in a row.
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