Natural hazards · Gretna

Gretna, NE natural hazards

Most of the natural-hazard damage FEMA expects in Gretna comes from tornadoes, and overall the risk is moderate for a U.S. community. Flood insurance has paid 2 claims here since 2019. 4 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Gretna?

Moderate

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Gretna to be higher than in 40% of U.S. communities, mostly from tornadoes and inland flooding.

Tornadoes39%Inland flooding26%Cold waves9%Hail9%Strong wind7%Heat waves6%Everything else5%

By hazard

What Gretna faces

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

Tornadoes

39% of expected damage

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

Inland flooding

26% of expected damage

Below average · higher than 25% of U.S. places

Recorded about once a year in the area

Cold waves

9% of expected damage

Above average · higher than 67% of U.S. places

Recorded about 5 times a year in the area

Hail

9% of expected damage

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

Recorded about 7 times a year in the area

Strong wind

7% of expected damage

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

Recorded about 4 times a year in the area

Heat waves

6% of expected damage

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

Recorded about 8 times a year in the area

Lower here

Ice stormsWinter weatherWildfireEarthquakesLandslidesLightningDrought

Not a risk here

Coastal floodingHurricanesAvalanchesTsunamisVolcanic 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 Gretna flood?

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

2paid claims since 2019

$9Kpaid to owners

0homes flooded more than once

20192026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Sarpy County.

Disasters that hit Gretna

4 federal disasters brought FEMA money here

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

Brought FEMA money into GretnaDeclared for Sarpy County only

2024

Severe Storms, Straight-Line Winds, Tornadoes, and Flooding

$183K to the City of Gretna for repairs

2019

Severe Winter Storm, Straight-Line Winds, and Flooding

34 households applied for aid $26K aid approved $7K to the City of Gretna for repairs

2009

Severe Winter Storms and Snowstorm

$9K to the City of Gretna for repairs

2008

Severe Storms, Tornadoes, and Flooding

14 households applied for aid $5K aid approved

Sarpy County has had 21 natural disasters declared since 1953, most often severe storms and floods.

Around Gretna

Gretna and the towns around it

Very lowLowModerateHighVery high

Chalcomostly tornadoesHigh

Meliamostly inland floodingModerate

Gretnamostly tornadoesModerate

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