Natural hazards · Mossyrock

Mossyrock, WA natural hazards

Most of the natural-hazard damage FEMA expects in Mossyrock comes from inland flooding, and overall the risk is very 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 Mossyrock?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Mossyrock to be higher than in 90% of U.S. communities, mostly from inland flooding and avalanches.

Inland flooding55%Avalanches26%Earthquakes17%Everything else3%

By hazard

What Mossyrock faces

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

Inland flooding

55% of expected damage

Well above average · higher than 96% of U.S. places

Recorded about once every 4 years in the area

Avalanches

26% of expected damage

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

Recorded about once a year in the area

Earthquakes

17% of expected damage

Well above average · higher than 87% of U.S. places

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightningVolcanic activity

Not a risk here

Coastal floodingHurricanesDroughtTsunamis

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 Mossyrock flood?

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

of all homes
are insured

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

Insurance rates: Lewis County.

Disasters that hit Mossyrock

5 federal disasters brought FEMA money here

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

Brought FEMA money into MossyrockDeclared for Lewis County only

2025

Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides

2 households applied for aid $16K aid approved

2009

Severe Winter Storm, Landslides, Mudslides, and Flooding

9 households applied for aid $51K aid approved $24K to the City of Mossyrock for repairs

2008

Severe Winter Storm and Record and Near Record Snow

$24K to the City of Mossyrock for repairs

2007

Severe Storms, Flooding, Landslides, and Mudslides

1 household applied for aid

2006

Severe Storms, Flooding, Landslides, and Mudslides

2 households applied for aid $6K aid approved

Lewis County has had 33 natural disasters declared since 1953, most often floods 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. Mossyrock 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 Mossyrock’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Mossyrock. 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.

Mossyrock, WA natural hazards

How exposed is Mossyrock?

What Mossyrock faces

Inland flooding

Avalanches

Earthquakes

Lower here

Not a risk here

Does Mossyrock flood?

5 federal disasters brought FEMA money here

Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides

Severe Winter Storm, Landslides, Mudslides, and Flooding

Severe Winter Storm and Record and Near Record Snow

Severe Storms, Flooding, Landslides, and Mudslides

Severe Storms, Flooding, Landslides, and Mudslides

How to read this page

Where to, neighbor?

Matches

Nearby