Natural hazards · Johnsonville

Johnsonville, SC natural hazards

Most of the natural-hazard damage FEMA expects in Johnsonville comes from hurricanes, and overall the risk is high for a U.S. community. 7 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Johnsonville?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Johnsonville to be higher than in 66% of U.S. communities, mostly from hurricanes and inland flooding.

Hurricanes36%Inland flooding22%Earthquakes15%Tornadoes13%Everything else14%

By hazard

What Johnsonville faces

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

Hurricanes

36% of expected damage

Well above average · higher than 91% of U.S. places

Recorded about once every 4 years in the area

Inland flooding

22% of expected damage

Well below average · higher than 18% of U.S. places

Recorded about once a year in the area

Earthquakes

15% of expected damage

Well above average · higher than 80% of U.S. places

Tornadoes

13% of expected damage

Well above average · higher than 75% of U.S. places

Recorded about once every 71 years in the area

Lower here

HailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingAvalanchesTsunamisVolcanic 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 Johnsonville flood?

FEMA's records show no paid flood insurance claims in Johnsonville.

of homes in flood zones
are insured

of all homes
are insured

No community discount. Johnsonville isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: Florence County.

Disasters that hit Johnsonville

7 federal disasters brought FEMA money here

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

Brought FEMA money into JohnsonvilleDeclared for Florence County only

2018

Hurricane Florence

27 households applied for aid $4K aid approved

2016

Hurricane Matthew

262 households applied for aid $154K aid approved $39K to the City of Johnsonville for repairs

2015

Severe Storms and Flooding

448 households applied for aid $895K aid approved $13K to the City of Johnsonville for repairs

2014

Severe Winter Storm

$23K to the City of Johnsonville for repairs

2004

Tropical Storm Frances

50 households applied for aid $33K aid approved

2004

Severe Ice Storm

$46K to the City of Johnsonville for repairs

1999

Hurricane Floyd Major Disaster Declarations

$4K to the City of Johnsonville for repairs

Florence County has had 18 natural disasters declared since 1953, most often hurricanes and severe storms.

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. Johnsonville is smaller than a census tract, so it shares the figures of the tract around its center.

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

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.