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Natural hazards · Sully

Sully, IA natural hazards

Most of the natural-hazard damage FEMA expects in Sully comes from drought, and overall the risk is low for a U.S. community. 4 federal disasters brought FEMA money into town.

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

How exposed is Sully?

20
Low
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Sully to be higher than in 20% of U.S. communities, mostly from drought and inland flooding.

Drought33%Inland flooding30%Tornadoes15%Strong wind8%Hail5%Everything else9%
By hazard

What Sully faces

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

Drought

33% of expected damage
Recorded about 4 times a year in the area

Inland flooding

30% of expected damage
Well below average · higher than 16% of U.S. places
Recorded about 2 times a year in the area

Tornadoes

15% of expected damage
Well above average · higher than 95% of U.S. places
Recorded about once every 7 years in the area

Strong wind

8% of expected damage
Well above average · higher than 94% of U.S. places
Recorded about 7 times a year in the area

Hail

5% of expected damage
Well above average · higher than 81% of U.S. places
Recorded about 6 times a year in the area

Lower here

HurricanesIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesLightning

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 Sully flood?

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

of homes in flood zones
are insured
of all homes
are insured
No community discount. Sully isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Jasper County.
Disasters that hit Sully

4 federal disasters brought FEMA money here

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

Brought FEMA money into SullyDeclared for Jasper County only
2024

Severe Storms, Tornadoes, and Flooding

3 households applied for aid $7K aid approved
2010

Severe Storms, Flooding, and Tornadoes

6 households applied for aid $16K aid approved
2008

Severe Storms, Tornadoes, and Flooding

2 households applied for aid $12K aid approved
2007

Severe Winter Storms

$11K to the City of Sully for repairs
Jasper County has had 17 natural disasters declared since 1953, most often severe storms and floods.
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. Sully 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 Sully’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Sully. 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.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01
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