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 Grass Valley responded to 600 fire and hazmat incidents — from cooking fires to gas leaks to a single $400K building blaze. Here's the full picture.
Building fires lead by count. Building fires lead by dollars. Together the top five categories make up about 46% of all calls.
May peaks. Mar dips. Watch for the typical fall climb starting in October.
2,566 incidents 2021–2025. Peak year was 2025. $19.6M cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 479 | — | |
| 2022 | 440 | -8.1% | |
| 2023 | 480 | +9.1% | |
| 2024 | 567 | +18.1% | |
| 2025 | 600 | +5.8% |
For the 69 building fires Grass Valley departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 300 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 | 56 | 18.7% | |
| 2 | Engine area, running gear, wheel area | 45 | 15.0% | |
| 3 | Cooking area, kitchen | 25 | 8.3% | |
| 4 | Outside area, other | 24 | 8.0% | |
| 5 | Other | 16 | 5.3% | |
| 6 | Bedroom - < 5 persons; included are jail or prison | 11 | 3.7% | |
| 7 | Vehicle storage area; garage, carport | 9 | 3.0% | |
| 8 | Wall surface: exterior | 9 | 3.0% | |
| 9 | Vehicle area, other | 9 | 3.0% | |
| 10 | Common room, den, family room, living room, lounge | 8 | 2.7% | |
| 11 | All other areas | 88 | 29.3% |
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 Grass Valley mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 126 | 42.0% | |
| 2 | Heat source: other | 30 | 10.0% | |
| 3 | Heat from powered equipment, other | 29 | 9.7% | |
| 4 | Hot ember or ash | 20 | 6.7% | |
| 5 | Hot or smoldering object, other | 19 | 6.3% | |
| 6 | Radiated, conducted heat from operating equipment | 15 | 5.0% | |
| 7 | Arcing | 15 | 5.0% | |
| 8 | Heat from direct flame, convection currents | 7 | 2.3% | |
| 9 | Spark, ember or flame from operating equipment | 6 | 2.0% | |
| 10 | Cigarette | 6 | 2.0% | |
| 11 | All other sources | 27 | 9.0% |
Largest single-incident property losses reported by Grass Valley departments in 2025. These 8 fires alone account for 87% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $400,000 | Building fires | Major | Investigated |
| 2 | $350,000 | Building fires | Major | Investigated |
| 3 | $300,000 | Building fires | Major | Investigated |
| 4 | $150,000 | Building fires | Significant | Investigated |
| 5 | $100,000 | Building fires | Significant | Investigated |
| 6 | $100,000 | Fires in structures other than in a building | Significant | Investigated |
| 7 | $90,000 | Mobile property (vehicle) fire, other | Significant | Investigated |
| 8 | $85,000 | Passenger vehicle fire | Significant | Investigated |
Per-capita rates let us compare apples to apples. Grass Valley sits above the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 967,455 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2020 | Natural | 318,776 | 44.5 mi | |
| 2018 | Power generation/transmission/distribution | 153,336 | 45.6 mi | |
| 2014 | Missing data/not specified/undetermined | 97,717 | 38.4 mi | |
| 2000 | Railroad operations and maintenance | 55,261 | 49.9 mi | |
| 2008 | Natural | 47,647 | 48.6 mi | |
| 1994 | Arson/incendiarism | 46,800 | 45.0 mi | |
| 1999 | Natural | 34,175 | 48.9 mi | |
| 2013 | Missing data/not specified/undetermined | 27,440 | 22.9 mi | |
| 1992 | Missing data/not specified/undetermined | 24,580 | 44.8 mi | |
| 2020 | Missing data/not specified/undetermined | 19,609 | 34.9 mi | |
| 2001 | Missing data/not specified/undetermined | 16,761 | 31.0 mi | |
| 2008 | Natural | 13,009 | 39.5 mi |
Top 7 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 Grass Valley. Useful comparison targets — same state, similar size, different fire profile.
1 departments report to NFIRS for incidents in Grass Valley.
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.