Natural hazards · Thunderbolt

Thunderbolt, GA natural hazards

Most of the natural-hazard damage FEMA expects in Thunderbolt comes from hurricanes, and overall the risk is very high for a U.S. community. Flood insurance has paid 34 claims here since 1994. 5 federal disasters brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Thunderbolt?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Thunderbolt to be higher than in 95% of U.S. communities, mostly from hurricanes.

Hurricanes62%Coastal flooding14%Inland flooding13%Everything else11%

By hazard

What Thunderbolt faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Hurricanes

62% of expected damage

Well above average · higher than 98% of U.S. places

Recorded about once every 3 years in the area

Coastal flooding

14% of expected damage

Well above average · among the top 1% of U.S. places

Inland flooding

13% of expected damage

Below average · higher than 33% of U.S. places

Recorded about once a year in the area

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

DroughtAvalanchesTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Thunderbolt flood?

Every paid claim on a federal flood insurance policy in Thunderbolt, from FEMA’s records.

34paid claims since 1994

$1.1Mpaid to owners

3homes flooded more than once

19942026

Biggest named events

Hurricane Irma: 12 claims, $478K
Hurricane Matthew: 5 claims, $162K
Hurricane Debby: 1 claim, $8K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

🏷️ 20% off flood insurance. Thunderbolt is in FEMA’s Community Rating System (class 6) for its flood-proofing work.

Insurance rates: Chatham County.

What’s been done with FEMA grants

2buildings retrofitted against wind

Disasters that hit Thunderbolt

5 federal disasters brought FEMA money here

Disasters the President declared that paid out in Thunderbolt itself: aid to households, or repair grants to the Town of Thunderbolt.

Brought FEMA money into ThunderboltDeclared for Chatham County only

2024

Hurricane Helene

35 households applied for aid $8K aid approved $471K to the Town of Thunderbolt for repairs

2024

Tropical Storm Debby

3 households applied for aid $300 aid approved

2017

Hurricane Irma

36 households applied for aid $6K aid approved $41K to the Town of Thunderbolt for repairs

2016

Hurricane Matthew

27 households applied for aid $7K aid approved $167K to the Town of Thunderbolt for repairs

1999

Hurricane Floyd Emergency Declarations

$7K to the Town of Thunderbolt for repairs

Chatham County has had 13 natural disasters declared since 1953, most often hurricanes and severe storms.

Around Thunderbolt

Thunderbolt and the towns around it

Very lowLowModerateHighVery high

Thunderboltmostly hurricanesVery high

Whitemarsh Islandmostly hurricanesVery high

Savannahmostly hurricanesVery high

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Thunderbolt covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Thunderbolt’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Thunderbolt. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Thunderbolt total about $4.2M a year, counting buildings, people and crops.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.