What is the flood risk in 80301 Boulder?

The flood hazard score for 80301 is 7.5/10 (HIGH). This score is derived from FEMA flood zones, elevation data, and NFIP claim density.

Is 80301 in a hurricane zone?

Boulder (80301) is not typically in a direct hurricane path, though tropical storm remnants can affect the area.

What natural disasters affect Boulder, Colorado?

The primary natural hazards for Boulder (80301) are wildfire, flood, severe weather. Calchis provides hazard scores for each peril using data from USGS, NOAA, and FEMA.

Boulder, Colorado 80301

Boulder County · Colorado

40.0150° N, 105.2705° W

Calchis Hazard Scores

⊕Earthquake

9.1/10EXTREME

Seismic source zone activity (Gutenberg-Richter, Intermountain West zone aggregate M5+ rate)2.9 / 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

◉Hail

8.6/10EXTREME

Hail events per 10,000 km2 per year, observed within ~83km (42.84)4.3 / 5.0

Regional roof vulnerability proxy (pre-ATTOM)1.5 / 5.0

Model v2.5 · Hazard score

≋Flood

7.5/10HIGH

FEMA flood zone (AE)3.5 / 4.0

Elevation vs base flood level (−4.8 ft, nearest FEMA BFE contour)3.0 / 3.0

Federal disaster declarations (14 in CO since 1953 · ~1 per 5.2yr)1.0 / 3.0

Model v2.5 · Hazard score

△Wildfire

7.3/10HIGH

Large fire frequency (Mountain West region, 10,000+ acres)3.5 / 3.5

Wildland-Urban Interface exposure, measured development/wildland mixture (0.458)1.6 / 3.5

Regional vegetation/fuel load proxy (unsourced constant)1.5 / 3.0

Model v2.5 · Hazard score

◠Tornado

2.7/10LOW

Tornado events per 10,000 km2 per year, state rate (1.6188)1.3 / 5.0

Manufactured housing density proxy0.5 / 3.0

Nocturnal tornado fraction (fatality multiplier)0.3 / 2.0

Model v2.5 · Hazard score

●Winter Storm

2.7/10LOW

Winter events per forecast zone per year (2.5619)2.2 / 5.0

Ice storm and blizzard share of winter events (2.9%)0.5 / 5.0

Model v2.5 · Hazard score

Not scored here: Hurricane — each holds under 0.5% of the national record for that peril and is not on the kept list.

Natural Hazards in Boulder

Based on historical data and geographic analysis, the primary natural hazards affecting Boulder, Colorado (80301) are wildfire, flood and severe weather. These scores are derived from federal and academic sources.

Get Your Exact Address Report

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.

Analyze Your Address — Free

Colorado Hazard Profiles

Colorado Wildfire Colorado Flood Colorado Severe Weather

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