Winter Storms risk in Washington

Winter Storm Patterns in Washington State

Washington State is no stranger to winter weather, but the type and severity of storms vary widely across the state. Western Washington, including the Puget Sound area, generally has mild, wet winters. However, cold Arctic air can occasionally surge in, bringing lowland snow, freezing rain, and icy conditions. The Cascade and Olympic mountain ranges receive massive amounts of snow, making them popular for winter recreation but also creating hazards for mountain communities and travelers.

Eastern Washington, which includes Spokane and the Columbia Basin, experiences a cold desert climate. Winters there are colder and drier, with more frequent snowfall and sub-freezing temperatures. The winter storm season in Washington typically runs from November through March, though mountain passes can see snow well into the spring. The National Weather Service notes that winter storms can bring heavy snow, ice, freezing rain, and high winds, all of which can disrupt daily life. Because Washington is rated Level 3 of 5 on the National Risk Index, winter storms represent a moderate hazard for the state. This rating means residents should be prepared for occasional severe winter weather events.

How Winter Storms Affect Homes

Winter storms can cause significant property damage in several ways. Heavy snow accumulating on rooftops can stress roofs to the point of collapse, especially on older homes or structures with flat or low-slope roofs. Ice dams can form along roof edges when melted snow refreezes, causing water to back up under shingles and leak into interiors. Freezing temperatures can also cause water pipes to burst, leading to extensive water damage. Ice and wind can bring down tree limbs and power lines, leaving homes without electricity and heat for extended periods.

Insurance considerations are important to understand. Most standard homeowners insurance policies cover damage caused by the weight of snow, as well as wind and fire damage. However, flood damage is typically excluded, so if melting snow or ice causes water to enter your home from the ground, you may need a separate flood insurance policy. The Ready.gov winter weather guidance encourages homeowners to review their policies and consider additional coverage if needed. It's also wise to create a home inventory of your belongings to make the claims process smoother.

How to Prepare Your Home for Winter Storms

Taking proactive steps can reduce the risk of winter storm damage. Here are some recommended actions:

• Insulate water pipes in unheated areas such as basements, attics, and garages to prevent freezing.
• Seal air leaks around doors and windows using weatherstripping and caulk to keep cold air out.
• Clean gutters and downspouts so melting snow can flow away from your roof and foundation.
• Trim tree branches that could fall on your home or power lines under the weight of ice or snow.
• Have your heating system serviced and replace filters before the season begins.
• Install or test smoke and carbon monoxide detectors, and place them on every level of your home.
• Prepare an emergency kit with flashlights, extra batteries, blankets, non-perishable food, and bottled water.
• Learn how to shut off your home's water and electricity in case a pipe bursts or an electrical hazard occurs.
• If you use a space heater, keep it at least three feet away from flammable materials and never leave it unattended.
• Consider purchasing a generator for backup power, but always operate it outdoors and away from windows to avoid carbon monoxide poisoning.

According to the CDC's winter weather guidance, heating equipment is a leading cause of home fires during winter. Proper maintenance and safe use are essential. Additionally, staying informed through local emergency alerts can help you act quickly when severe weather is forecast.

Frequently Asked Questions

What should I do during a winter storm warning?

Stay indoors and avoid driving unless absolutely necessary. Keep your home heated to a minimum temperature of 55 degrees Fahrenheit to help prevent pipes from freezing. If you lose power, dress in layers and use only safe heating alternatives like blankets and properly placed space heaters. Continuously monitor local weather reports and follow any instructions from local officials. The National Weather Service recommends having an emergency kit ready before a storm arrives.

Is damage from winter storms covered by homeowners insurance?

Damage caused by the weight of snow or ice on a roof is typically covered by standard homeowners insurance. Wind and fire damage are also usually covered. However, flooding from melting snow or ice is generally excluded and may require a separate flood insurance policy. To be certain, review your policy and speak with your insurance agent. The Washington Emergency Management Division also encourages residents to understand their risk and coverage.

How can I prevent ice dams on my roof?

Ice dams form when heat from inside your home melts snow on the roof, and that water refreezes at the colder eaves. To prevent them, keep your attic well-insulated and ventilated to maintain a cold roof temperature. After a storm, use a roof rake to pull snow off the edges of your roof. Do not chip ice dams with sharp tools, as that can damage your roofing materials. Addressing ice dams promptly can help avoid interior water damage.

Official Resources

• Washington Emergency Management Division
• NWS Winter Weather Safety
• Ready.gov – Winter Weather
• CDC – Winter Weather