Tacoma, Washington 98402
Pierce County · Washington
47.2529° N, 122.4443° W
Calchis Hazard Scores
⊕Earthquake
10.0/10EXTREME
Seismic source zone activity (Gutenberg-Richter, Pacific Coast zone aggregate M5+ rate)3.5 / 3.5
Proximity to mapped Quaternary faults3.0 / 3.0
Historical damage potential (Hazus W1 thresholds)2.9 / 3.5
Model v2.5 · Hazard score
△Wildfire
7.2/10HIGH
Large fire frequency (Pacific Northwest region, 10,000+ acres)3.5 / 3.5
Wildland-Urban Interface exposure, measured development/wildland mixture (0.439)1.5 / 3.5
Regional vegetation/fuel load proxy (unsourced constant)2.0 / 3.0
Model v2.5 · Hazard score
≋Flood
3.7/10LOW
FEMA flood zone (X)0.3 / 4.0
Elevation above base flood level (estimated)1.0 / 3.0
Federal disaster declarations (35 in WA since 1953 · ~1 per 2.1yr)2.4 / 3.0
Model v2.5 · Hazard score
●Winter Storm
1.5/10LOW
Winter events per forecast zone per year (1.0153)0.9 / 5.0
Ice storm and blizzard share of winter events (3.9%)0.7 / 5.0
Model v2.5 · Hazard score
Not scored here: Hurricane, Hail, Tornado — each holds under 0.5% of the national record for that peril and is not on the kept list.
Natural Hazards in Tacoma
Based on historical data and geographic analysis, the primary natural hazards affecting Tacoma, Washington (98402) are wildfire, earthquake and flood. These scores are derived from federal and academic sources.
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ZIP-level scores provide a general overview. For address-specific hazard analysis with consequence ring exposure, active event monitoring, and full score component breakdown — use the Calchis workbench.
Washington Hazard Profiles
Nearby Areas
Data Sources
USGS Earthquake Hazards.gov
NOAA National Hurricane Center.gov
FEMA Flood Map Service.gov
NIFC Active Fire Data.gov
NOAA Storm Prediction Center.gov
NOAA Storm Events Database.gov