In 2025, fire departments serving Potomac responded to 164 fire and hazmat incidents — from cooking fires to gas leaks to a single $300K building blaze. Here's the full picture.
Gas leak (natural gas or LPG) lead by count. Building fires lead by dollars. Together the top five categories make up about 76% of all calls.
Jun peaks. Jul dips. Watch for the typical fall climb starting in October.
852 incidents 2021–2025. Peak year was 2024. $7.9M cumulative property loss.
| Year | Incidents | YoY | |
|---|---|---|---|
| 2021 | 172 | — | |
| 2022 | 142 | -17.4% | |
| 2023 | 165 | +16.2% | |
| 2024 | 209 | +26.7% | |
| 2025 | 164 | -21.5% |
For the 8 building fires Potomac departments responded to in 2025, here's how they were classified once investigators were finished.
NFIRS Area of Origin (AREA_ORIG) for the 128 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 | Cooking area, kitchen | 17 | 13.3% | |
| 2 | Engine area, running gear, wheel area | 17 | 13.3% | |
| 3 | Outside area, other | 16 | 12.5% | |
| 4 | Other | 14 | 10.9% | |
| 5 | Wildland, woods | 7 | 5.5% | |
| 6 | Function area, other | 5 | 3.9% | |
| 7 | Vehicle storage area; garage, carport | 5 | 3.9% | |
| 8 | Open area - outside; included are farmland, field | 5 | 3.9% | |
| 9 | Undetermined | 5 | 3.9% | |
| 10 | Chute/container - trash, rubbish, waste | 4 | 3.1% | |
| 11 | All other areas | 33 | 25.8% |
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 Potomac mix.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 37 | 28.9% | |
| 2 | Heat from powered equipment, other | 16 | 12.5% | |
| 3 | Radiated, conducted heat from operating equipment | 14 | 10.9% | |
| 4 | Arcing | 10 | 7.8% | |
| 5 | Hot ember or ash | 8 | 6.2% | |
| 6 | Hot or smoldering object, other | 7 | 5.5% | |
| 7 | Heat source: other | 5 | 3.9% | |
| 8 | Spark, ember or flame from operating equipment | 4 | 3.1% | |
| 9 | Lightning | 4 | 3.1% | |
| 10 | Heat spread from another fire, other | 4 | 3.1% | |
| 11 | All other sources | 19 | 14.8% |
Largest single-incident property losses reported by Potomac departments in 2025. These 8 fires alone account for 99% of the city's annual total.
| # | Property loss | Type | Severity | Status |
|---|---|---|---|---|
| 1 | $300,000 | Building fires | Major | Investigated |
| 2 | $125,000 | Building fires | Significant | Investigated |
| 3 | $50,000 | Building fires | Significant | Investigated |
| 4 | $30,000 | Building fires | Significant | Investigated |
| 5 | $25,000 | Building fires | Significant | Investigated |
| 6 | $20,000 | Passenger vehicle fire | Significant | Investigated |
| 7 | $10,000 | Fires in structures other than in a building | Significant | Investigated |
| 8 | $10,000 | Building fires | Significant | Investigated |
Per-capita rates let us compare apples to apples. Potomac sits below the national average for incidents per resident.
Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 5,937 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.
| Year | Cause | Acres | Distance | |
|---|---|---|---|---|
| 1999 | Missing data/not specified/undetermined | 640 | 34.1 mi | |
| 2011 | Recreation and ceremony | 500 | 25.1 mi | |
| 2011 | Missing data/not specified/undetermined | 461 | 9.5 mi | |
| 2011 | Missing data/not specified/undetermined | 431 | 23.0 mi | |
| 2003 | Missing data/not specified/undetermined | 408 | 42.6 mi | |
| 1996 | Recreation and ceremony | 405 | 35.5 mi | |
| 1996 | Missing data/not specified/undetermined | 400 | 35.8 mi | |
| 1996 | Arson/incendiarism | 350 | 37.1 mi | |
| 2011 | Missing data/not specified/undetermined | 344 | 41.3 mi | |
| 2006 | Arson/incendiarism | 318 | 31.0 mi | |
| 1999 | Missing data/not specified/undetermined | 250 | 32.1 mi | |
| 1999 | Debris and open burning | 200 | 42.4 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 Maryland cities with population within ±25% of Potomac. 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.