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 Union City responded to 257 fire and hazmat incidents — from cooking fires to gas leaks to a single $350K 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 72% of all calls.
Jun peaks. Nov dips. Watch for the typical fall climb starting in October.
1,172 incidents 2021–2025. Peak year was 2024. $6.4M cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 208 | — | |
| 2022 | 225 | +8.2% | |
| 2023 | 212 | -5.8% | |
| 2024 | 270 | +27.4% | |
| 2025 | 257 | -4.8% |
For the 14 building fires Union City departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 172 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 | 46 | 26.7% | |
| 2 | Cooking area, kitchen | 20 | 11.6% | |
| 3 | Engine area, running gear, wheel area | 16 | 9.3% | |
| 4 | Outside area, other | 13 | 7.6% | |
| 5 | Operator/passenger area of transportation equip. | 8 | 4.7% | |
| 6 | Vehicle storage area; garage, carport | 7 | 4.1% | |
| 7 | Bedroom - < 5 persons; included are jail or prison | 5 | 2.9% | |
| 8 | Other | 4 | 2.3% | |
| 9 | Common room, den, family room, living room, lounge | 4 | 2.3% | |
| 10 | Attic: vacant, crawl space above top story, cupola | 4 | 2.3% | |
| 11 | All other areas | 45 | 26.2% |
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 Union City mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 82 | 47.7% | |
| 2 | Heat source: other | 17 | 9.9% | |
| 3 | Heat from powered equipment, other | 16 | 9.3% | |
| 4 | Hot or smoldering object, other | 16 | 9.3% | |
| 5 | Arcing | 8 | 4.7% | |
| 6 | Spark, ember or flame from operating equipment | 5 | 2.9% | |
| 7 | Radiated, conducted heat from operating equipment | 5 | 2.9% | |
| 8 | Heat from other open flame or smoking materials | 5 | 2.9% | |
| 9 | Heat from undetermined smoking material | 5 | 2.9% | |
| 10 | Fireworks | 3 | 1.7% | |
| 11 | All other sources | 10 | 5.8% |
Largest single-incident property losses reported by Union City departments in 2025. These 8 fires alone account for 95% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $350,000 | Building fires | Major | Investigated |
| 2 | $300,000 | Building fires | Major | Investigated |
| 3 | $170,000 | Passenger vehicle fire | Significant | Investigated |
| 4 | $168,000 | Building fires | Significant | Investigated |
| 5 | $30,000 | Passenger vehicle fire | Significant | Investigated |
| 6 | $20,000 | Building fires | Significant | Investigated |
| 7 | $15,000 | Building fires | Significant | Investigated |
| 8 | $15,000 | Passenger vehicle fire | Significant | Investigated |
Per-capita rates let us compare apples to apples. Union City sits below the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 654,045 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2020 | Missing data/not specified/undetermined | 396,624 | 27.6 mi | |
| 2020 | Missing data/not specified/undetermined | 86,509 | 26.2 mi | |
| 2007 | Recreation and ceremony | 47,760 | 39.4 mi | |
| 2006 | Equipment and vehicle use | 34,271 | 42.8 mi | |
| 2009 | Missing data/not specified/undetermined | 12,200 | 26.3 mi | |
| 2009 | Missing data/not specified/undetermined | 7,817 | 32.8 mi | |
| 2003 | Equipment and vehicle use | 6,804 | 35.5 mi | |
| 2005 | Arson/incendiarism | 6,744 | 22.4 mi | |
| 2020 | Missing data/not specified/undetermined | 5,513 | 48.7 mi | |
| 2003 | Natural | 5,018 | 34.6 mi | |
| 2016 | Missing data/not specified/undetermined | 4,474 | 35.9 mi | |
| 2020 | Natural | 4,279 | 39.6 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 Union City. 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.