Natural hazards · South Twigg

South Twigg, IL natural hazards

Most of the natural-hazard damage FEMA expects in South Twigg comes from earthquakes, and overall the risk is high for a U.S. community. 1 federal disaster brought FEMA money into town.

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

Expected damage

How exposed is South Twigg?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in South Twigg to be higher than in 64% of U.S. communities, mostly from earthquakes.

Earthquakes62%Inland flooding14%Tornadoes7%Strong wind6%Everything else12%

By hazard

What South Twigg faces

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

Earthquakes

62% of expected damage

Well above average · higher than 90% of U.S. places

Inland flooding

14% of expected damage

Well below average · higher than 9% of U.S. places

Recorded about once a year in the area

Tornadoes

7% of expected damage

Well above average · higher than 82% of U.S. places

Recorded about once every 6 years in the area

Strong wind

6% of expected damage

Well above average · higher than 94% of U.S. places

Recorded about 4 times a year in the area

Lower here

HurricanesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesLightningDrought

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 South Twigg flood?

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

Disasters that hit South Twigg

1 federal disaster brought FEMA money here

Disasters the President declared that paid out in South Twigg itself: aid to households, or repair grants to the Township of South Twigg.

Brought FEMA money into South TwiggDeclared for Hamilton County only

2011

Severe Storms and Flooding

$5K to the Township of South Twigg for repairs

Hamilton County has had 8 natural disasters declared since 1953, most often severe storms and tornadoes.

Around South Twigg

South Twigg and the towns around it

Very lowLowModerateHighVery high

Long Branchmostly inland floodingHigh

Tatemostly earthquakesHigh

South Twiggmostly earthquakesHigh

South Flanniganmostly earthquakesHigh

Twiggmostly earthquakesHigh

Mayberrymostly earthquakesHigh

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. South Twigg 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 South Twigg’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Township of South Twigg. 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.