Onawa, IA natural hazards
Most of the natural-hazard damage FEMA expects in Onawa comes from tornadoes, and overall the risk is low for a U.S. community. 8 federal disasters brought FEMA money into town.
FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarationsHow exposed is Onawa?
FEMA expects yearly storm and flood damage to homes and buildings in Onawa to be higher than in 30% of U.S. communities, mostly from tornadoes and inland flooding.
What Onawa faces
Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.
Tornadoes
Inland flooding
Cold waves
Hail
Strong wind
Lower here
Not a risk here
Does Onawa flood?
FEMA's records show no paid flood insurance claims in Onawa.
are insured
8 federal disasters brought FEMA money here
Disasters the President declared that paid out in Onawa itself: aid to households, or repair grants to the City of Onawa.
Severe Winter Storm
Severe Storms, Flooding, Straight-Line Winds, and Tornadoes
Severe Storms and Flooding
Severe Storms, Tornadoes, and Flooding
Flooding
Severe Storms, Tornadoes, and Flooding
Severe Storms, Flooding, and Tornadoes
Snow
How to read this page
FEMA’s expected losses across Onawa total about $1.3M a year, counting buildings, people and crops.
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.