Hurricanes risk in Washington

Hurricane Risk and Characteristics in Washington

Washington is one of the least hurricane-prone states in the U.S., with a very low risk rating of 1 out of 5, according to the Federal Emergency Management Agency (FEMA). The state’s location in the Pacific Northwest and the cold offshore waters of the Pacific Ocean make it extremely difficult for hurricanes to form or maintain strength. Hurricanes rely on warm ocean water above 80°F (27°C) to develop, and Washington’s coastal waters are typically far cooler, usually below 60°F (15°C) even in summer. As a result, no hurricane has ever made landfall in Washington as a fully developed tropical cyclone.

That said, the state is not completely immune to tropical cyclone effects. The remnants of hurricanes that form in the eastern Pacific Ocean — such as those that spin off the coast of Mexico and Central America — can sometimes travel northward and bring heavy rainfall and gusty winds to Washington. These systems usually weaken to tropical storms or post-tropical cyclones before arrival. The National Hurricane Center (NHC) tracks these systems, and the risk is highest from August through October, which is the peak of the eastern Pacific hurricane season. The western half of Washington, including the coastal areas, the Puget Sound lowlands, and the Cascades foothills, is more likely to see the remnants, while the eastern side of the state is generally sheltered by the Cascade Range. Even then, the primary threat is not hurricane-force winds but intense rainfall, which can cause flash flooding, river flooding, and landslides.

Given this low-risk status, it is still prudent for residents to understand that “low risk” does not mean “no risk.” Climate patterns, such as El Niño, can occasionally influence the track of Pacific storms, and heavy rain events can happen independently of tropical cyclones. The Washington Emergency Management Division advises residents to be ready for all types of severe weather, including flooding, which is a more common hazard in the state.

How It Affects Homes

Even though hurricanes are rare in Washington, the indirect effects of tropical weather systems can still damage homes. The most significant risks are:

• Flooding: Heavy rainfall from a weakened hurricane or its remnants can overwhelm rivers, streams, and urban drainage systems. Basements, ground-floor rooms, and crawl spaces are vulnerable to water intrusion. Flooding is the most common and expensive natural disaster in the U.S., and it can happen far inland and in low-lying areas.
• Wind damage: While sustained hurricane-force winds are unlikely, strong gusts from storms can still damage roofs, knock down tree limbs, and blow debris into windows and siding. Older homes or those with weakened structures are more susceptible.
• Landslides: In the steep terrain of western Washington, saturated soil from prolonged rain can trigger landslides, posing a danger to homes on or near slopes.

In terms of insurance, it is important for homeowners to review their policies. Standard homeowner’s insurance does not cover flood damage. FEMA’s flood insurance program offers separate policies, and even in low-to-moderate-risk areas, flood insurance can be a wise investment. According to Ready.gov, just one inch of water can cause thousands of dollars in damage. Wind damage is typically covered under a standard home policy, but check for deductibles that may apply specifically to wind or hurricane claims. The Washington Emergency Management Division encourages households to review their coverage annually and consider flood insurance through the National Flood Insurance Program (NFIP) if their property is in a floodplain or has experienced past flooding.

How to Prepare Your Home

Even with low hurricane risk, taking proactive steps can help protect your home from the occasional storm and the more common flooding events. Here are concrete mitigation steps:

• Clear gutters and downspouts at least twice a year, and ensure they direct water away from your foundation.
• Trim trees and remove dead branches that could fall on your home during strong winds.
• Secure loose objects such as patio furniture, grills, and yard decorations that can become projectiles in high winds.
• Check your roof for loose or missing shingles and repair them promptly.
• Install or verify a sump pump in your basement or crawl space, and consider a battery backup.
• Elevate appliances and utilities (like water heaters and electrical panels) above the potential flood level if you live in a flood-prone area.
• Sandbag or install flood barriers around doorways and low openings if you are in a known flood zone.
• Create a household emergency kit with water, food, medications, flashlights, batteries, and important documents.
• Develop a family emergency plan, including evacuation routes and a communication system.
• Purchase flood insurance if you can, even if you are not in a high-risk flood zone.

Frequently Asked Questions

Has a hurricane ever hit Washington state?

No hurricane has ever made landfall in Washington as a hurricane. The state’s cool ocean waters prevent hurricanes from forming there. However, remnants of eastern Pacific hurricanes have brought heavy rain and wind, but they are not classified as hurricanes when they arrive.

What is the difference between a hurricane and a typhoon?

Hurricanes and typhoons are the same weather phenomenon, called tropical cyclones. The only difference is location. In the Atlantic and eastern Pacific Ocean, they are called hurricanes; in the western Pacific, they are called typhoons. Washington could only see remnants from eastern Pacific hurricanes, not typhoons.

Do I need flood insurance in Washington even if the hurricane risk is low?

Flood insurance is recommended for many Washington homeowners because flooding from rain, snowmelt, or landslides can occur regardless of hurricane activity. Standard homeowner’s policies do not cover flooding. Contact your insurance provider or visit the National Flood Insurance Program website to assess your risk.

Official Resources

• Washington Emergency Management Division
• NOAA National Hurricane Center
• Ready.gov – Hurricanes
• FEMA Hurricane Preparedness