Natural hazards · Silvana

Silvana, WA natural hazards

Most of the natural-hazard damage FEMA expects in Silvana comes from earthquakes, and overall the risk is high for a U.S. community. 4 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Silvana?

High

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Silvana to be higher than in 69% of U.S. communities, mostly from earthquakes and inland flooding.

Earthquakes50%Inland flooding43%Everything else7%

By hazard

What Silvana faces

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

Earthquakes

50% of expected damage

Well above average · higher than 88% of U.S. places

Inland flooding

43% of expected damage

Above average · higher than 62% of U.S. places

Recorded about once every 3 years in the area

Lower here

Coastal floodingTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireLandslidesStrong windLightningDroughtVolcanic activity

Not a risk here

HurricanesAvalanchesTsunamis

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 Silvana flood?

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

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Snohomish County.

What’s been done with FEMA grants

1homes raised above flood level

1flood-prone properties bought out and cleared

Disasters that hit Silvana

4 federal disasters brought FEMA money here

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

Brought FEMA money into SilvanaDeclared for Snohomish County only

2025

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

5 households applied for aid $5K aid approved

2009

Severe Winter Storm, Landslides, Mudslides, and Flooding

9 households applied for aid $18K aid approved

2006

Severe Storms, Flooding, Landslides, and Mudslides

2 households applied for aid $2K aid approved

2003

Severe Storms and Flooding

2 households applied for aid $2K aid approved

Snohomish County has had 33 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. Silvana 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 Silvana’s own flood-insurance community; household aid to the registrant’s city; repair grants to Silvana. 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.