Risk Snapshot
Ratings represent risk relative to North America. 100 is the highest risk for the hazard and 1 is the lowest, but does not indicate no risk. Flood and fire are rated based on the buildings in Seattle exposed to these hazards. See hazard sections below and check your address for details.
Precipitation risk in Seattle, WA is extreme. Heat risk is high. Drought risk is significant. About 7% of buildings in Seattle, WA are at risk of flooding, and the risk level for these buildings is significant. About 17% of buildings in Seattle, WA are at risk of wildfire, and the risk level for these buildings is relatively low. 
The share of precipitation during the biggest downpours in Seattle is projected to increase.
A downpour for Seattle, WA is a two-day rainfall total over 0.7 inches. Around 1990, about 43.0% of precipitation fell during these downpours. In 2050, this is projected to be about 49.0%. The annual precipitation in Seattle, WA is projected to increase from about 35.4" to about 38.0".
The number of the hottest days in Seattle is projected to keep increasing.
In a typical year around 1990, people in Seattle, WA experienced about 7 days above 84.9ºF in a year. By 2050, people in Seattle are projected to experience an average of about 28 days per year over 84.9ºF.
The average water stress in Seattle is projected to be about the same around 2050 as around 2015.
The Puget Sound watershed, which contains Seattle, WA, has experienced 406 weeks (34% of weeks) since 2000 with some of its area in drought of any level, and 5 weeks (0% of weeks) since 2000 with some of its area in Extreme or Exceptional drought. Source: National Drought Monitor.
Buildings at risk in Seattle average about a 27% chance of a flood about 1.0 feet deep over 30 years.
Of 324 census tracts in Seattle, WA, there are 6 where more than half of buildings have significant risk from high tide flooding, surface (pluvial) flooding, and riverine (fluvial) flooding. Property owners can check a specific address for flood risk including FEMA flood zone, then take steps to reduce their vulnerability to flooding damage.
The risk on the most dangerous fire weather days in Seattle is moderate. The number of these days per year is expected to increase through 2050.
Of 324 census tracts in Seattle, WA, there are 81 where more than a quarter of buildings have significant fire risk, and 41 where more than half of buildings have significant fire risk. Property owners can take steps to mitigate their risks from wildfires.
The projections on this page describe a future that we still have a chance to avoid. To keep average global warming below 1.5ºC—the goal agreed on in the 2015 Paris Climate Accords—we need to act rapidly to drastically reduce greenhouse gas emissions.
The risks presented on this page reflect modeled averages for Seattle, WA under one projected emissions scenario and can vary for individual properties. To find out more, check a specific address and request a report describing risks to your property and in your area.
The latest Intergovernmental Panel on Climate Change report states: “If global emissions continue at current rates, the remaining carbon budget for keeping warming to 1.5ºC will likely be exhausted before 2030.” This remaining carbon budget is about the same amount as total global emissions 2010-2019.
Check our free report for tips on protecting your home from hazards.















