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 Norco responded to 72 fire and hazmat incidents — from cooking fires to gas leaks to a single $100K 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 60% of all calls.
Jan peaks. Feb dips. Watch for the typical fall climb starting in October.
513 incidents 2021–2025. Peak year was 2021. $4.5M cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 145 | — | |
| 2022 | 107 | -26.2% | |
| 2023 | 99 | -7.5% | |
| 2024 | 90 | -9.1% | |
| 2025 | 72 | -20.0% |
For the 3 building fires Norco departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 158 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 | 43 | 27.2% | |
| 2 | Outside area, other | 16 | 10.1% | |
| 3 | Cargo/trunk area - all vehicles | 9 | 5.7% | |
| 4 | Open area - outside; included are farmland, field | 8 | 5.1% | |
| 5 | Vehicle storage area; garage, carport | 7 | 4.4% | |
| 6 | Chute/container - trash, rubbish, waste | 6 | 3.8% | |
| 7 | Vehicle area, other | 6 | 3.8% | |
| 8 | Operator/passenger area of transportation equip. | 6 | 3.8% | |
| 9 | Undetermined | 6 | 3.8% | |
| 10 | Other | 5 | 3.2% | |
| 11 | All other areas | 46 | 29.1% |
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 Norco mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 57 | 36.1% | |
| 2 | Heat source: other | 15 | 9.5% | |
| 3 | Heat from powered equipment, other | 15 | 9.5% | |
| 4 | Arcing | 13 | 8.2% | |
| 5 | Radiated, conducted heat from operating equipment | 12 | 7.6% | |
| 6 | Heat, spark from friction | 9 | 5.7% | |
| 7 | Heat from other open flame or smoking materials | 6 | 3.8% | |
| 8 | Cigarette lighter | 6 | 3.8% | |
| 9 | Hot or smoldering object, other | 5 | 3.2% | |
| 10 | Spark, ember or flame from operating equipment | 4 | 2.5% | |
| 11 | All other sources | 16 | 10.1% |
Largest single-incident property losses reported by Norco departments in 2025. These 8 fires alone account for 87% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $100,000 | Building fires | Significant | Investigated |
| 2 | $80,000 | Passenger vehicle fire | Significant | Investigated |
| 3 | $37,000 | Passenger vehicle fire | Significant | Investigated |
| 4 | $35,995 | Camper or recreational vehicle (RV) fire | Significant | Investigated |
| 5 | $25,000 | Passenger vehicle fire | Significant | Investigated |
| 6 | $15,000 | Passenger vehicle fire | Significant | Investigated |
| 7 | $10,000 | Passenger vehicle fire | Significant | Investigated |
| 8 | $10,000 | Fires in structures other than in a building | Significant | Investigated |
Per-capita rates let us compare apples to apples. Norco sits below the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 1,038,845 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 | 42.6 mi | |
| 2020 | Missing data/not specified/undetermined | 115,997 | 32.3 mi | |
| 2003 | Arson/incendiarism | 91,281 | 24.5 mi | |
| 1999 | Missing data/not specified/undetermined | 65,000 | 33.5 mi | |
| 2003 | Arson/incendiarism | 59,788 | 17.2 mi | |
| 2015 | Missing data/not specified/undetermined | 51,000 | 40.5 mi | |
| 2006 | Arson/incendiarism | 40,200 | 45.0 mi | |
| 2002 | Arson/incendiarism | 37,240 | 25.1 mi | |
| 2016 | Missing data/not specified/undetermined | 36,274 | 23.8 mi | |
| 2020 | Equipment and vehicle use | 33,424 | 33.9 mi | |
| 2008 | Missing data/not specified/undetermined | 30,305 | 11.4 mi | |
| 2007 | Missing data/not specified/undetermined | 28,476 | 14.1 mi |
Top 4 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 Norco. 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.