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 Ontario responded to 1,031 fire and hazmat incidents — from cooking fires to gas leaks to a single $585K building blaze. Here's the full picture.
Outside rubbish, trash or waste fire lead by count. Building fires lead by dollars. Together the top five categories make up about 49% of all calls.
Jan peaks. Apr dips. Watch for the typical fall climb starting in October.
5,746 incidents 2021–2025. Peak year was 2021. $3.0M cumulative property loss. 3 civilian deaths.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 1,293 | — | |
| 2022 | 1,173 | -9.3% | |
| 2023 | 1,094 | -6.7% | |
| 2024 | 1,155 | +5.6% | |
| 2025 | 1,031 | -10.7% |
For the 49 building fires Ontario departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 1,646 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 | Engine area, running gear, wheel area | 350 | 21.3% | |
| 2 | Undetermined | 290 | 17.6% | |
| 3 | Open area - outside; included are farmland, field | 98 | 6.0% | |
| 4 | Outside area, other | 97 | 5.9% | |
| 5 | Operator/passenger area of transportation equip. | 71 | 4.3% | |
| 6 | Cooking area, kitchen | 69 | 4.2% | |
| 7 | Highway, parking lot, street: on or near | 66 | 4.0% | |
| 8 | Chute/container - trash, rubbish, waste | 64 | 3.9% | |
| 9 | Vehicle area, other | 49 | 3.0% | |
| 10 | Vehicle storage area; garage, carport | 47 | 2.9% | |
| 11 | All other areas | 445 | 27.0% |
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 Ontario mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 945 | 57.4% | |
| 2 | Heat from powered equipment, other | 128 | 7.8% | |
| 3 | Radiated, conducted heat from operating equipment | 90 | 5.5% | |
| 4 | Cigarette lighter | 65 | 3.9% | |
| 5 | Arcing | 56 | 3.4% | |
| 6 | Heat from other open flame or smoking materials | 39 | 2.4% | |
| 7 | Radiated heat from another fire | 39 | 2.4% | |
| 8 | Spark, ember or flame from operating equipment | 37 | 2.2% | |
| 9 | Heat from direct flame, convection currents | 32 | 1.9% | |
| 10 | Chemical reaction | 29 | 1.8% | |
| 11 | All other sources | 186 | 11.3% |
Largest single-incident property losses reported by Ontario departments in 2025. These 6 fires alone account for 100% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $585,000 | Building fires | Major | Investigated |
| 2 | $100,000 | Building fires | Significant | Investigated |
| 3 | $100,000 | Building fires | Significant | Investigated |
| 4 | $10,000 | Passenger vehicle fire | Significant | Investigated |
| 5 | $10,000 | Building fires | Significant | Investigated |
| 6 | $500 | Passenger vehicle fire | Significant | Investigated |
Per-capita rates let us compare apples to apples. Ontario sits below the national average for incidents per resident.
66 fire-related casualties recorded in NFIRS Module 11 across the 2021–2025 window. Age, gender, and severity are coarse-binned — no individual identification possible.
| Age | Count | |
|---|---|---|
| 0-9 | 6 | |
| 10-19 | 0 | |
| 20-29 | 8 | |
| 30-39 | 22 | |
| 40-49 | 18 | |
| 50-59 | 4 | |
| 60-69 | 3 | |
| 70-79 | 4 | |
| 80+ | 1 |
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 1,019,450 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2009 | Arson/incendiarism | 160,371 | 36.1 mi | |
| 2020 | Missing data/not specified/undetermined | 115,997 | 24.8 mi | |
| 2003 | Arson/incendiarism | 91,281 | 21.8 mi | |
| 1999 | Missing data/not specified/undetermined | 65,000 | 31.2 mi | |
| 2003 | Arson/incendiarism | 59,788 | 11.4 mi | |
| 2015 | Missing data/not specified/undetermined | 51,000 | 41.2 mi | |
| 2006 | Arson/incendiarism | 40,200 | 49.1 mi | |
| 2002 | Arson/incendiarism | 37,240 | 16.8 mi | |
| 2016 | Missing data/not specified/undetermined | 36,274 | 17.5 mi | |
| 2020 | Equipment and vehicle use | 33,424 | 37.0 mi | |
| 2008 | Missing data/not specified/undetermined | 30,305 | 13.8 mi | |
| 2007 | Missing data/not specified/undetermined | 28,476 | 20.6 mi |
Top 10 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 Ontario. 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.