City vs city
Martensdale vs Norwalk, IA
Martensdale currently scores 2 points higher overall than Norwalk, 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
Martensdale: 49/100 · Norwalk: 47/100
Martensdale is 2 points higher.
Flood
Martensdale: 66/100 · Norwalk: 75/100
Norwalk is 9 points higher.
Martensdale: FEMA NFHL flood zones: 11 features intersect this tile.
Norwalk: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Martensdale: 18/100 · Norwalk: 18/100
No gap.
Martensdale: Wind exposure derived from ingested design wind / climatology tiles.
Norwalk: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Martensdale: 57/100 · Norwalk: 58/100
Norwalk is 1 points higher.
Martensdale: Lightning exposure derived from ingested climatology tiles.
Norwalk: Lightning exposure derived from ingested climatology tiles.
Tornado
Martensdale: 42/100 · Norwalk: 15/100
Martensdale is 27 points higher.
Martensdale: Tornado risk derived from NOAA SPC historical reports.
Norwalk: Tornado risk derived from NOAA SPC historical reports.
Hail
Martensdale: 98/100 · Norwalk: 100/100
Norwalk is 2 points higher.
Martensdale: Hail risk derived from NOAA SPC historical reports.
Norwalk: Hail risk derived from NOAA SPC historical reports.
Storm surge
Martensdale: Unavailable · Norwalk: Unavailable
A score difference cannot be calculated without both sources.
Martensdale: Storm surge model is not available for this location yet.
Norwalk: Storm surge model is not available for this location yet.
Wildfire
Martensdale: 32/100 · Norwalk: 31/100
Martensdale is 1 points higher.
Martensdale: Wildfire exposure derived from ingested fire potential tiles.
Norwalk: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Martensdale: 31/100 · Norwalk: 31/100
No gap.
Martensdale: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Norwalk: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.