In 2025, fire departments serving Warren responded to 19 fire and hazmat incidents — from cooking fires to gas leaks to a single $194K 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 79% of all calls.
Apr peaks. Jun dips. Watch for the typical fall climb starting in October.
61 incidents 2021–2025. Peak year was 2025. $581K cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 9 | — | |
| 2022 | 14 | +55.6% | |
| 2023 | 11 | -21.4% | |
| 2024 | 8 | -27.3% | |
| 2025 | 19 | +137.5% |
For the 7 building fires Warren departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 18 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 | 14 | 77.8% | |
| 2 | Roof surface: exterior | 1 | 5.6% | |
| 3 | Cargo/trunk area - all vehicles | 1 | 5.6% | |
| 4 | Engine area, running gear, wheel area | 1 | 5.6% | |
| 5 | Outside area, other | 1 | 5.6% |
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 Warren mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 13 | 72.2% | |
| 2 | Heat source: other | 1 | 5.6% | |
| 3 | Hot or smoldering object, other | 1 | 5.6% | |
| 4 | Heat, spark from friction | 1 | 5.6% | |
| 5 | Hot ember or ash | 1 | 5.6% | |
| 6 | Heat from other open flame or smoking materials | 1 | 5.6% |
Largest single-incident property losses reported by Warren departments in 2025. These 6 fires alone account for 100% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $194,100 | Building fires | Significant | Investigated |
| 2 | $194,100 | Building fires | Significant | Investigated |
| 3 | $20,000 | Building fires | Significant | Investigated |
| 4 | $8,501 | Building fires | Significant | Investigated |
| 5 | $3,000 | Passenger vehicle fire | Significant | Investigated |
| 6 | $1,000 | Building fires | Significant | Investigated |
Per-capita rates let us compare apples to apples. Warren sits above the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 1,615 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 2016 | Missing data/not specified/undetermined | 329 | 32.2 mi | |
| 2015 | Missing data/not specified/undetermined | 275 | 33.4 mi | |
| 2004 | Missing data/not specified/undetermined | 139 | 35.1 mi | |
| 2015 | Power generation/transmission/distribution | 137 | 30.4 mi | |
| 2012 | Debris and open burning | 120 | 21.8 mi | |
| 2015 | Missing data/not specified/undetermined | 92 | 38.1 mi | |
| 2017 | Missing data/not specified/undetermined | 72 | 8.2 mi | |
| 1995 | Missing data/not specified/undetermined | 60 | 45.3 mi | |
| 2008 | Missing data/not specified/undetermined | 54 | 10.1 mi | |
| 2016 | Missing data/not specified/undetermined | 50 | 48.1 mi | |
| 2016 | Missing data/not specified/undetermined | 47 | 26.0 mi | |
| 2016 | Missing data/not specified/undetermined | 30 | 37.1 mi |
Top 2 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.
Six New Hampshire cities with population within ±25% of Warren. Useful comparison targets — same state, similar size, different fire profile.
1 departments report to NFIRS for incidents in Warren.
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.