City vs city
Fort Lewis vs McChord AFB, WA
McChord AFB currently scores 4 points higher overall than Fort Lewis, with the largest gap in tornado.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Scores describe each city’s reference grid tile, not every property. A missing model is unavailable, not zero risk. Air quality uses an ingested EPA AirNow snapshot and may not reflect current conditions; other factors describe baseline exposure. The overall score blends different hazards and is not a probability of damage. Read the scoring methodology and sources.
Overall
Fort Lewis: 15/100 · McChord AFB: 19/100
McChord AFB is 4 points higher.
Flood
Fort Lewis: 22/100 · McChord AFB: 25/100
McChord AFB is 3 points higher.
Fort Lewis: FEMA NFHL flood zones: 5 features intersect this tile.
McChord AFB: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Fort Lewis: 7/100 · McChord AFB: 7/100
No gap.
Fort Lewis: Wind exposure derived from ingested design wind / climatology tiles.
McChord AFB: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Fort Lewis: 2/100 · McChord AFB: 2/100
No gap.
Fort Lewis: Lightning exposure derived from ingested climatology tiles.
McChord AFB: Lightning exposure derived from ingested climatology tiles.
Tornado
Fort Lewis: 4/100 · McChord AFB: 0/100
Fort Lewis is 4 points higher.
Fort Lewis: Tornado risk derived from NOAA SPC historical reports.
McChord AFB: Tornado risk derived from NOAA SPC historical reports.
Hail
Fort Lewis: 2/100 · McChord AFB: 0/100
Fort Lewis is 2 points higher.
Fort Lewis: Hail risk derived from NOAA SPC historical reports.
McChord AFB: Hail risk derived from NOAA SPC historical reports.
Storm surge
Fort Lewis: Unavailable · McChord AFB: Unavailable
A score difference cannot be calculated without both sources.
Fort Lewis: Storm surge model is not available for this location yet.
McChord AFB: Storm surge model is not available for this location yet.
Wildfire
Fort Lewis: 56/100 · McChord AFB: 52/100
Fort Lewis is 4 points higher.
Fort Lewis: Wildfire exposure derived from ingested fire potential tiles.
McChord AFB: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Fort Lewis: 9/100 · McChord AFB: 8/100
Fort Lewis is 1 points higher.
Fort Lewis: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
McChord AFB: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.