Simi Valley, CA
Local storm history & FEMA National Risk Index data
Simi Valley is rated Relatively High for overall natural hazard risk — higher risk than most US counties — based on FEMA's National Risk Index for Ventura County, CA. The county's highest-rated hazards are wildfire, earthquake, and inland flooding.
Storm events near Simi Valley
NOAA-recorded tornado, hail, and flood events within 25 miles of Simi Valley's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Simi Valley 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 Ventura County's FEMA National Risk Index scores, covering Simi Valley along with the rest of the county, not a Simi Valley-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 99.8 | Relatively High |
| Inland Flooding | 99.3 | Very High |
| Coastal Flooding | 60.8 | Relatively Moderate |
| Earthquake | 99.7 | Relatively High |
| Heat Wave | 85.8 | Relatively Moderate |
| Tornado | 42.4 | Relatively Low |
| Avalanche | 33.9 | Very Low |
| Cold Wave | 8.6 | Very Low |
| Drought | 80.1 | Relatively Moderate |
| Hail | 52 | Relatively Low |
| Hurricane | 0 | No Rating |
| Ice Storm | — | Not Applicable |
| Landslide | 98 | Relatively High |
| Lightning | 70.2 | Relatively Moderate |
| Strong Wind | 44.1 | Relatively Low |
| Tsunami | 44.6 | Very Low |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 1.4 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Ventura County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Ventura County:
More on Ventura County:
Frequently asked questions
What natural hazards is Simi Valley, CA at risk of?
Simi Valley 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 Ventura County, where Simi Valley is located, are wildfire, earthquake, and inland flooding.
What is Simi Valley's biggest natural hazard risk?
Wildfire is the highest-rated hazard for Ventura County, where Simi Valley is located, scoring 99.8 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Simi Valley a high-risk area for natural disasters?
Yes — Simi Valley carries higher risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively High" for Ventura County.
Has Simi Valley had tornadoes, hail, or flooding?
NOAA has recorded 1 tornado, 1 hail, 74 inland flooding events within 25 miles of Simi Valley since 2016.