Natural hazards · Altha

Altha, FL natural hazards

Most of the natural-hazard damage FEMA expects in Altha comes from hurricanes, and overall the risk is very high for a U.S. community. 3 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Altha?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Altha to be higher than in 87% of U.S. communities, mostly from hurricanes and inland flooding.

Hurricanes46%Inland flooding27%Tornadoes11%Everything else16%

By hazard

What Altha faces

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

Hurricanes

46% of expected damage

Well above average · higher than 95% of U.S. places

Recorded about once every 4 years in the area

Inland flooding

27% of expected damage

Above average · higher than 69% of U.S. places

Recorded about once every 2 years in the area

Tornadoes

11% of expected damage

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

Recorded about once every 15 years in the area

Lower here

HailWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

Coastal floodingIce stormsAvalanchesTsunamisVolcanic 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 Altha flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Calhoun County.

What’s been done with FEMA grants

2flood-prone properties bought out and cleared

Disasters that hit Altha

3 federal disasters brought FEMA money here

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

Brought FEMA money into AlthaDeclared for Calhoun County only

2018

Hurricane Michael

1,466 households applied for aid $3.8M aid approved $279K to the Town of Altha for repairs

2009

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

37 households applied for aid $64K aid approved

2004

Hurricane Ivan

53 households applied for aid $155K aid approved

Calhoun County has had 34 natural disasters declared since 1953, most often hurricanes and severe storms.

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