What is the flood risk in 29577 Myrtle Beach?

The flood hazard score for 29577 is 1.6/10 (LOW). This score is derived from FEMA flood zones, elevation data, and NFIP claim density.

Is 29577 in a hurricane zone?

Yes, Myrtle Beach (29577) is in a hurricane-prone area. The hurricane hazard score is 6.5/10.

What natural disasters affect Myrtle Beach, South Carolina?

The primary natural hazards for Myrtle Beach (29577) are hurricane, flood. Calchis provides hazard scores for each peril using data from USGS, NOAA, and FEMA.

Myrtle Beach, South Carolina 29577

Horry County · South Carolina

33.6891° N, 78.8867° W

Calchis Hazard Scores

◎Hurricane

6.5/10HIGH

CAT3+ landfall return period, Southeast-Atlantic segment (10.7 yr, NOAA HRD 1950-2024)3.0 / 3.5

Distance to coastline3.0 / 3.0

Storm surge exposure (elevation + coastal proximity)0.5 / 3.5

Model v2.5 · Hazard score

●Winter Storm

3.4/10LOW

Winter events per forecast zone per year (0.8126)0.7 / 5.0

Ice storm and blizzard share of winter events (16.4%)2.7 / 5.0

Model v2.5 · Hazard score

◉Hail

3.2/10LOW

Hail events per 10,000 km2 per year, observed within ~83km (16.11)1.6 / 5.0

Regional roof vulnerability proxy (pre-ATTOM)2.0 / 5.0

Model v2.5 · Hazard score

◠Tornado

3.1/10LOW

Tornado events per 10,000 km2 per year, observed within ~83km (1.89)1.6 / 5.0

Manufactured housing density proxy2.5 / 3.0

Nocturnal tornado fraction (fatality multiplier)2.0 / 2.0

Model v2.5 · Hazard score

△Wildfire

2.4/10LOW

Large fire frequency (Southern US region, 10,000+ acres)1.0 / 3.5

Wildland-Urban Interface exposure, measured development/wildland mixture (0.196)0.7 / 3.5

Regional vegetation/fuel load proxy (unsourced constant)1.0 / 3.0

Model v2.5 · Hazard score

≋Flood

1.6/10LOW

FEMA flood zone (X)0.3 / 4.0

Elevation above base flood level (estimated)1.0 / 3.0

Federal disaster declarations (4 in SC since 1953 · ~1 per 18.3yr)0.3 / 3.0

Model v2.5 · Hazard score

⊕Earthquake

0.5/10LOW

Seismic source zone activity (Gutenberg-Richter, Eastern US zone aggregate M5+ rate)0.0 / 3.5

The Eastern US source zone's shipped Gutenberg-Richter rate produces about 0.0003 independent M5+ earthquakes a year against 8 observed in the 1980–2024 catalogue (0.178 a year), so this component reads far too low across the twelve states in the zone — including the Charleston seismic zone. Treat a low earthquake hazard score here as unmeasured, not as a finding of low hazard.

Proximity to mapped Quaternary faults0.3 / 3.0

Historical damage potential (Hazus W1 thresholds)2.9 / 3.5

Model v2.5 · Hazard score

Natural Hazards in Myrtle Beach

Based on historical data and geographic analysis, the primary natural hazards affecting Myrtle Beach, South Carolina (29577) are hurricane and flood. These scores are derived from federal and academic sources.

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South Carolina Hazard Profiles

South Carolina Hurricane South Carolina Flood

Nearby Areas

29401

Charleston

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