Dome Fire Reaches 6,632 Acres in Yosemite, 40% Contained as of Oct. 3
The Dome Fire has burned 6,632 acres in Yosemite National Park and is 40% contained as of Oct. 3, with 765 personnel assigned; Glacier Point Road stays closed.
CA
In 2025, fire departments serving Simi Valley responded to 327 fire and hazmat incidents — from cooking fires to gas leaks to a single $12K building blaze. Here's the full picture.
Carbon monoxide incident lead by count. Building fires lead by dollars. Together the top five categories make up about 74% of all calls.
Jan peaks. Dec dips. Watch for the typical fall climb starting in October.
1,465 incidents 2021–2025. Peak year was 2023. $12K cumulative property loss. 4 civilian deaths.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 183 | — | |
| 2022 | 284 | +55.2% | |
| 2023 | 348 | +22.5% | |
| 2024 | 323 | -7.2% | |
| 2025 | 327 | +1.2% |
For the 37 building fires Simi Valley departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 667 building fires investigators classified across 2021–2025. The room or location where ignition occurred — kitchens, bedrooms, exterior, vehicle areas — tells you where to focus prevention.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 152 | 22.8% | |
| 2 | Outside area, other | 90 | 13.5% | |
| 3 | Engine area, running gear, wheel area | 76 | 11.4% | |
| 4 | Cooking area, kitchen | 48 | 7.2% | |
| 5 | Vehicle storage area; garage, carport | 27 | 4.0% | |
| 6 | Chute/container - trash, rubbish, waste | 21 | 3.1% | |
| 7 | Highway, parking lot, street: on or near | 21 | 3.1% | |
| 8 | Bedroom - < 5 persons; included are jail or prison | 17 | 2.5% | |
| 9 | Vehicle area, other | 16 | 2.4% | |
| 10 | Cargo/trunk area - all vehicles | 15 | 2.2% | |
| 11 | All other areas | 184 | 27.6% |
NFIRS Heat Source (HEAT_SOURC) — the physical thing that started it. Spark or ember from operating equipment, an open flame, smoking materials, or hot embers from a fireplace are the leading culprits nationwide. Here's the Simi Valley mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 337 | 50.5% | |
| 2 | Heat from powered equipment, other | 66 | 9.9% | |
| 3 | Hot or smoldering object, other | 61 | 9.1% | |
| 4 | Heat source: other | 44 | 6.6% | |
| 5 | Arcing | 33 | 4.9% | |
| 6 | Spark, ember or flame from operating equipment | 19 | 2.8% | |
| 7 | Hot ember or ash | 16 | 2.4% | |
| 8 | Radiated, conducted heat from operating equipment | 13 | 1.9% | |
| 9 | Fireworks | 8 | 1.2% | |
| 10 | Heat from direct flame, convection currents | 8 | 1.2% | |
| 11 | All other sources | 62 | 9.3% |
Largest single-incident property losses reported by Simi Valley departments in 2025. These 1 fires alone account for 100% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $12,000 | Fires in structures other than in a building | Significant | Investigated |
Per-capita rates let us compare apples to apples. Simi Valley sits below the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 1,624,880 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2017 | Missing data/not specified/undetermined | 281,893 | 20.9 mi | |
| 2020 | Natural | 174,178 | 48.0 mi | |
| 2006 | Debris and open burning | 162,702 | 25.3 mi | |
| 2009 | Arson/incendiarism | 160,371 | 32.0 mi | |
| 2020 | Missing data/not specified/undetermined | 115,997 | 45.1 mi | |
| 2003 | Missing data/not specified/undetermined | 108,204 | 9.4 mi | |
| 2018 | Missing data/not specified/undetermined | 96,949 | 3.4 mi | |
| 2003 | Equipment and vehicle use | 63,720 | 15.3 mi | |
| 2007 | Power generation/transmission/distribution | 45,300 | 21.4 mi | |
| 2016 | Missing data/not specified/undetermined | 41,432 | 22.4 mi | |
| 2007 | Misuse of fire by a minor | 38,356 | 29.6 mi | |
| 1993 | Arson/incendiarism | 38,152 | 9.7 mi |
Top 5 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.
Six California cities with population within ±25% of Simi Valley. Useful comparison targets — same state, similar size, different fire profile.
A 30-minute weekend can cut your home's exposure substantially. These four checklists are a good starting point.
Numbers reflect incidents reported by participating fire departments to the National Fire Incident Reporting System (NFIRS) Public Data Release for calendar year 2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Per-capita comparisons use 2023 ACS population estimates. Wildland fire data complements NFIRS with NIFC and USFS perimeters. Active-fire counts come from a dated NIFC snapshot, not a live feed.