What is the natural disaster risk in St. Thomas County, VI?

St. Thomas County, VI has an overall natural disaster risk score of 2.2 out of 10, rated Low by FEMA's National Risk Index. Its most significant hazard is Tsunami.

What natural hazards affect St. Thomas County, VI?

The leading natural hazards for St. Thomas County, VI are Tsunami, Volcanic Activity, Coastal Flooding. These rankings come from FEMA National Risk Index data for the surrounding county.

How does the disaster risk in St. Thomas County, VI compare to the rest of the US?

St. Thomas County, VI's risk score of 2.2/10 is lower than the U.S. national average of 4.5/10. VI residents can use this to gauge relative exposure to natural hazards.

Natural Disaster Risk in St. Thomas County

2.2out of 10

Low Risk

Risk Summary for St. Thomas County

St. Thomas County scores 2.2/10 (Low risk), below the U.S. average of 4.5. The leading hazard is Tsunami.

Top Hazards

Tsunami Volcanic Activity Coastal Flooding

All 18 Hazard Scores

Tsunami

5.4

Volcanic Activity

5.1

Coastal Flooding

4.9

Avalanche

4.5

Hurricane

2.4

Drought

1.7

Ice Storm

1.3

Strong Wind

1.2

Extreme Heat

1.2

Winter Weather

1.2

Cold Wave

1.2

Wildfire

1.1

Earthquake

1.1

Tornado

1.1

Hail

1.1

Lightning

1.1

Landslide

1.1

Riverine Flooding

1.0

How it compares

St. Thomas County

2.2

US national avg.

4.5

Live Conditions

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🏠 What this means for insurance

Below-average risk — standard coverage likely adequate

Natural disaster risk here is below the US average. Standard homeowners insurance will typically be sufficient, but it is still worth reviewing exclusions for floods and earthquakes.

This is general information only. Consult a licensed insurance professional for advice specific to your property.

Natural Hazard Profile: St. Thomas County, VI

St. Thomas County is located in the United States in VI, home to roughly 41,412 residents. The county experiences a temperate continental climate with four seasons, with seasonal severe weather shaping the natural hazards faced by its communities. FEMA assesses risk at this county level, providing the baseline for every city and ZIP code within its boundaries.

According to FEMA's National Risk Index, St. Thomas County carries an overall risk score of 2.2/10, placing it in the low category. Coastal tsunami exposure is the dominant hazard concern, with the regional tectonic environment capable of generating both local and distant-source tsunami waves. The area also faces notable exposure to volcano and coastal flood.

St. Thomas County's risk score and well below the U.S. national average of 4.5/10. Of the 18 hazard categories tracked by FEMA for St. Thomas County, the highest-scoring are tsunami, volcano, and coastal flood. These scores reflect county-level data and represent the baseline risk that all communities in the county share.

Despite its lower-than-average risk classification, St. Thomas County is not immune to natural hazards. Basic preparedness — an emergency kit, awareness of seasonal risks, and property insurance that covers tsunami — remains prudent for all residents.

What this means for St. Thomas County: Tsunami preparedness

If you feel strong shaking near the coast, move to high ground immediately — do not wait for an official warning.
Learn your community evacuation routes and the location of designated assembly areas.
Standard homeowners insurance excludes tsunami flooding; flood coverage may be needed.

Cities in St. Thomas County

St Thomas2.2/10

ZIP codes in St. Thomas County

00802St Thomas2.2

Data source: FEMA National Risk Index (NRI). Scores normalized to 1–10 across all US counties. For informational purposes only.