Key Points
- Heavy snow snarls western Washington road network
- Transport officials shut highways over safety fears
- Drivers warned of treacherous ice and low visibility
- Emergency crews respond to spinouts and jackknifes
- Authorities urge travellers to delay non-essential journeys
Seattle (Evening Washington News) March 13, 2026 – Major roads and highways across western Washington have been closed as persistent snowfall, rapidly deteriorating visibility and increasingly icy surfaces create hazardous travel conditions for thousands of drivers on Friday morning. Authorities say the rolling closures, imposed in the interest of public safety, are expected to continue and possibly expand through the day as the winter storm system moves slowly across the region and dumps additional snow on already compromised routes.
Why has Washington state closed so many roads?
The Washington State Department of Transportation (WSDOT) says its decision to shut multiple corridors was driven by a sharp escalation in weather-related collisions, jackknifed lorries and abandoned vehicles that quickly overwhelmed some stretches of motorway before dawn. As officials described, traffic cameras showed cars losing control on untreated patches of compact snow and ice, while plough and de‑icing crews struggled to keep pace with the continued accumulation.
According to WSDOT’s Friday morning operational updates, the most severe conditions have been reported on mountain passes and exposed sections of interstate highways where strong gusts are blowing snow back across ploughed lanes, creating near white‑out conditions in places. The agency says the closures are intended to prevent further incidents and to give crews space to work, emphasising that partial restrictions proved insufficient as crashes piled up in quick succession on several key approaches into the Puget Sound corridor.
Transport officials report that a mix of full closures, rolling blockades and chain‑only restrictions are in effect on major routes serving western Washington’s urban centres and mountain communities. These include sections of interstate motorways linking Seattle with the interior, as well as heavily travelled commuter arteries feeding suburbs and satellite towns across the region.
How are drivers and commuters being warned about the dangers?
The department says it is pushing real‑time alerts through its official travel website, mobile applications, roadside message signs and social media channels to warn drivers about closures and encourage them to postpone non‑essential trips. Public information officers are also appearing on local radio and television bulletins throughout Friday morning, urging people who must drive to slow down dramatically, increase stopping distances and prepare for sudden visibility drops behind heavy bands of snow.
Officials stress that the most dangerous conditions often develop in the early hours when temperatures are lowest and many stretches have not yet been treated with de‑icer. They add that commuters used to rain rather than snow in the temperate Pacific Northwest may underestimate the risks posed by compacted snow on tarmac, emphasising that four‑wheel drive vehicles and sport utility vehicles are not immune to black ice and can easily slide off carriageways at relatively low speeds.
What impact has the storm had on collisions and emergency responses?
Local police forces and state troopers report a significant uptick in calls related to spinouts, minor collisions and stranded vehicles since the early hours of Friday, with some departments describing the volume as comparable to previous major winter events in the region. Officers say that on several routes, chains of incidents quickly formed as drivers came around bends or crests and encountered stationary traffic on slick surfaces, triggering secondary collisions and forcing emergency services to temporarily shut lanes or entire roadways.
Emergency medical crews have responded to a range of injuries, though many have been described as non‑life‑threatening, such as whiplash, minor head trauma and fractures from vehicles leaving the roadway.
Fire brigades and tow services have been working alongside transport and law‑enforcement agencies to remove disabled vehicles from ditches and central reservations, but officials caution that response times are being affected by the same treacherous conditions, making it even more important for motorists to avoid unnecessary travel.
How are transport and road crews trying to keep routes open?
WSDOT maintenance managers say dozens of ploughs, gritters and de‑icing lorries have been deployed across western Washington since before sunrise, working in continuous shifts to clear snow and apply salt and other treatments. However, they acknowledge that the pace of snowfall in some areas has outstripped their ability to keep lanes fully clear, particularly on longer gradients and on multi‑lane motorways carrying heavy commuter traffic.
Crews are prioritising key freight corridors, hospital access routes and emergency service links, while residential streets and less critical roads may see longer delays before they are treated. Supervisors emphasise that even treated surfaces can become quickly re‑covered as snow continues to fall, meaning that a road that appears clear at one moment can deteriorate within minutes, especially when temperatures hover around freezing and passing vehicles compact new snow into a slippery base layer.
How are airlines, buses and trains responding to the snow disruption?
Transport operators across the region are adjusting schedules and warning passengers to expect reduced services, longer journey times and possible cancellations as the storm unfolds. Local bus agencies have announced detours around steep hills and priority treatment zones, in some cases suspending services on higher‑risk neighbourhood routes while keeping modified mainline services running to hospitals and city centres.
Regional rail services are monitoring track conditions and signalling systems for weather‑related faults, though trains can sometimes continue operating when roads become impassable. Airlines serving western Washington airports are reporting de‑icing delays and some cancelled departures, advising passengers to check their carriers’ latest updates before leaving home.
Aviation officials remind travellers that even when runways are clear, ground access to terminals can remain difficult if surrounding roads and motorways are restricted or closed.
What guidance are authorities giving to residents and businesses?
Officials at WSDOT and local emergency management offices are strongly encouraging residents to work from home where possible, stagger journeys and avoid peak morning and evening travel windows. Businesses are being asked to show flexibility for staff affected by closures, particularly those who live in hilly or more remote areas likely to face the longest disruptions.
Households are being reminded to ensure they have basic winter supplies, including warm clothing, torches, batteries and non‑perishable food, in case conditions worsen or power cuts occur. Authorities recommend that anyone who must drive carries an emergency kit in their vehicle such as blankets, water, snacks, a shovel and traction aids in addition to ensuring that fuel tanks are topped up and mobile phones are fully charged before setting out.
How unusual is this level of snow for western Washington?
Meteorologists note that while western Washington is no stranger to winter weather, significant snow events of this intensity remain relatively infrequent compared with colder inland states, particularly at lower elevations near sea level. The region’s climate usually features milder temperatures and considerable rainfall, so heavy accumulating snow in densely populated coastal and lowland areas often causes disproportionate disruption when it does arrive.
Experts explain that the current storm system has drawn in a band of cold air that has undercut moist Pacific weather, creating the right conditions for widespread snow rather than rain. This combination, together with wind patterns pushing moisture up against the coastal ranges and Cascades, has produced heavier falls and more persistent bands of precipitation than typical short‑lived showers, increasing the likelihood of sustained travel problems across a broad swathe of western Washington.
What are forecasters saying about how long the snow will last?
Weather forecasters predict that the heaviest snow will continue through at least part of Friday, with some models indicating additional bursts into the weekend depending on how quickly the storm system moves on. They warn that temperatures are expected to remain near or below freezing in many places overnight, raising the risk that slush and standing water on roads will refreeze into sheets of ice, even if snowfall itself eases at times.
Officials are cautioning against assuming that conditions will improve immediately once flakes stop falling, stressing that lingering ice and compacted snow can continue to pose significant hazards for days. Forecasters say that clearer skies behind the system may offer a short‑term reprieve, but overnight cold snaps could trigger further icy patches, especially on shaded bends, bridges and overpasses that cool more quickly than adjacent surfaces.
How does the closure decision process work during winter storms?
Transport leaders explain that closure decisions during winter storms are based on a combination of live camera feeds, on‑the‑ground reports from patrols and maintenance crews, and input from meteorologists tracking evolving weather patterns. When collision rates spike or visibility drops below certain safety thresholds, supervisors can order rolling slow‑downs, metered access to ramps or full closures to prevent additional vehicles from entering dangerous stretches.
Officials emphasise that closure and reopening decisions are constantly reviewed as conditions change, with managers balancing the need to maintain mobility for essential workers and freight transport against the imperative to avoid preventable injuries and fatalities. They add that each route is assessed individually, taking into account gradient, traffic volumes, alternative options and emergency access requirements, meaning that two nearby roads can be subject to very different restrictions at any given moment during a dynamic and fast‑moving event such as Friday’s snowstorm.