Norwalk, CT
Local storm history & FEMA National Risk Index data
Norwalk is rated Relatively High for overall natural hazard risk — higher risk than most US counties — based on FEMA's National Risk Index for Western Connecticut Planning Region, CT. The county's highest-rated hazards are inland flooding, strong wind, and hurricane.
Storm events near Norwalk
NOAA-recorded tornado, hail, and flood events within 25 miles of Norwalk's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Norwalk 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 Western Connecticut Planning Region's FEMA National Risk Index scores, covering Norwalk along with the rest of the county, not a Norwalk-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 46.2 | Very Low |
| Inland Flooding | 98.1 | Relatively High |
| Coastal Flooding | 89.8 | Relatively High |
| Earthquake | 92 | Relatively Moderate |
| Heat Wave | 84 | Relatively Moderate |
| Tornado | 69.2 | Relatively Moderate |
| Avalanche | 24.6 | Very Low |
| Cold Wave | 65.8 | Relatively Moderate |
| Drought | 49.9 | Relatively Low |
| Hail | 41.4 | Relatively Low |
| Hurricane | 97 | Relatively High |
| Ice Storm | 94.7 | Relatively High |
| Landslide | 89 | Relatively Moderate |
| Lightning | 78.9 | Relatively Moderate |
| Strong Wind | 97.8 | Relatively High |
| Tsunami | — | Insufficient Data |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 94.3 | Relatively High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Western Connecticut Planning Region risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Western Connecticut Planning Region:
More on Western Connecticut Planning Region:
Frequently asked questions
What natural hazards is Norwalk, CT at risk of?
Norwalk is rated Relatively High for overall natural hazard risk by FEMA's National Risk Index — higher risk than most US counties. The highest-rated hazards for Western Connecticut Planning Region, where Norwalk is located, are inland flooding, strong wind, and hurricane.
What is Norwalk's biggest natural hazard risk?
Inland Flooding is the highest-rated hazard for Western Connecticut Planning Region, where Norwalk is located, scoring 98.1 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Norwalk a high-risk area for natural disasters?
Yes — Norwalk carries higher risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively High" for Western Connecticut Planning Region.
Has Norwalk had tornadoes, hail, or flooding?
NOAA has recorded 4 tornado, 23 hail, 296 inland flooding events within 25 miles of Norwalk since 2016.