Natural hazards · Gridley

Gridley, IL natural hazards

Most of the natural-hazard damage FEMA expects in Gridley comes from inland flooding, 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 Gridley?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Gridley to be higher than in 64% of U.S. communities, mostly from inland flooding and cold waves.

Inland flooding47%Cold waves25%Drought9%Tornadoes9%Everything else10%

By hazard

What Gridley faces

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

Inland flooding

47% of expected damage

Well above average · higher than 79% of U.S. places

Recorded about once a year in the area

Cold waves

25% of expected damage

Above average · higher than 61% of U.S. places

Recorded about 5 times a year in the area

Drought

9% of expected damage

Recorded about 4 times a year in the area

Tornadoes

9% of expected damage

Well above average · higher than 89% of U.S. places

Recorded about once every 6 years in the area

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireEarthquakesLandslidesStrong windLightning

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 Gridley flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: McLean County.

Disasters that hit Gridley

1 federal disaster brought FEMA money here

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

Brought FEMA money into GridleyDeclared for McLean County only

2011

Severe Winter Storm and Snowstorm

$5K to the Township of Gridley for repairs

McLean County has had 9 natural disasters declared since 1953, most often winter storms and ice storms.

Around Gridley

Gridley and the towns around it

Very lowLowModerateHighVery high

Waldomostly inland floodingHigh

Gridleymostly inland floodingHigh

Hudsonmostly inland floodingHigh

Chenoamostly inland floodingHigh

El Pasomostly inland floodingLow

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