ZIP 99363 recorded 18 fire and hazmat incidents in 2025, 100 across 2021–2025. Primary county: Walla Walla County, WA. FEMA NRI rates wildfire risk here as Very High.
100 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 18 | |
| 2022 | 12 | |
| 2023 | 37 | |
| 2024 | 15 | |
| 2025 | 18 |
Jun peaks. Jan dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 99363 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Brush, or brush and grass mixture fire | 46 | 46.0% | |
| 2 | Forest, woods or wildland fire | 19 | 19.0% | |
| 3 | Natural vegetation fire, other | 6 | 6.0% | |
| 4 | Grass fire | 6 | 6.0% | |
| 5 | Fire, other | 3 | 3.0% |
For the 1 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 99363 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Outside area, other | 3 | 23.1% | |
| 2 | Engine area, running gear, wheel area | 2 | 15.4% | |
| 3 | Railroad right of way: on or near | 2 | 15.4% | |
| 4 | Other | 1 | 7.7% | |
| 5 | Processing/manufacturing area, workroom | 1 | 7.7% | |
| 6 | Storage area, other | 1 | 7.7% | |
| 7 | Wall assembly | 1 | 7.7% | |
| 8 | Highway, parking lot, street: on or near | 1 | 7.7% | |
| 9 | All other areas | 1 | 7.7% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Undetermined | 5 | 38.5% | |
| 2 | Heat source: other | 1 | 7.7% | |
| 3 | Radiated, conducted heat from operating equipment | 1 | 7.7% | |
| 4 | Hot or smoldering object, other | 1 | 7.7% | |
| 5 | Heat, spark from friction | 1 | 7.7% | |
| 6 | Fireworks | 1 | 7.7% | |
| 7 | Chemical reaction | 1 | 7.7% | |
| 8 | Lightning | 1 | 7.7% | |
| 9 | All other sources | 1 | 7.7% |
Largest single-incident losses in ZIP 99363 across 2021–2025. These 3 fires alone account for 601% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $500,000 | Brush, or brush and grass mixture fire | 2023 | Major |
| 2 | $100,000 | Building fires | 2025 | Significant |
| 3 | $500 | Special outside fire, other | 2022 | Significant |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 100 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.