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Natural hazards · Glen Allan

Glen Allan, MS natural hazards

Most of the natural-hazard damage FEMA expects in Glen Allan comes from inland flooding, and overall the risk is high for a U.S. community. 5 federal disasters brought FEMA money into town.

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

How exposed is Glen Allan?

65
High
vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Glen Allan to be higher than in 65% of U.S. communities, mostly from inland flooding and tornadoes.

Inland flooding44%Tornadoes16%Drought10%Cold waves8%Earthquakes6%Everything else16%
By hazard

What Glen Allan faces

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

Inland flooding

44% of expected damage
Well above average · higher than 75% of U.S. places
Recorded about 2 times a year in the area

Tornadoes

16% of expected damage
Well above average · higher than 81% of U.S. places
Recorded about once every 4 years in the area

Drought

10% of expected damage
Recorded about 17 times a year in the area

Cold waves

8% of expected damage
Well above average · among the top 1% of U.S. places
Recorded about once a year in the area

Earthquakes

6% of expected damage
Well above average · higher than 78% of U.S. places

Lower here

HurricanesHailIce stormsWinter weatherHeat wavesWildfireLandslidesStrong 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 Glen Allan flood?

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

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

What’s been done with FEMA grants

1flood-prone properties bought out and cleared
Disasters that hit Glen Allan

5 federal disasters brought FEMA money here

Disasters the President declared that paid out in Glen Allan itself: aid to households, or repair grants to Glen Allan.

Brought FEMA money into Glen AllanDeclared for Washington County only
2026

Severe Winter Storm

97 households applied for aid $330K aid approved
2016

Severe Storms and Flooding

1 household applied for aid
2011

Flooding

7 households applied for aid $3K aid approved
2008

Hurricane Gustav

6 households applied for aid $3K aid approved
2008

Severe Storms and Flooding

1 household applied for aid
Washington County has had 24 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. Glen Allan 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 Glen Allan’s own flood-insurance community; household aid to the registrant’s city; repair grants to Glen Allan. 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/19 · 2025-01-01
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