Seattle

Mystery Hazmat Scare Shuts Down Greenwood Avenue North Block

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Published on January 27, 2026
Mystery Hazmat Scare Shuts Down Greenwood Avenue North BlockSource: Google Street View

A quiet stretch of Greenwood Avenue North turned into a hazmat scene Tuesday evening as Seattle Fire crews swarmed a building in the 13000 block and urged everyone nearby to steer clear. Firefighters stayed on site into the evening, restricting access while they ran tests and started containment work on whatever triggered the alarm.

What Officials Say

The Seattle Fire Department confirmed that a hazardous-materials response was underway at a building in the 13000 block of Greenwood Ave. N., asking the public to "please avoid the area," according to a post from the Seattle Fire Department. Officials have not yet released details about what kind of substance may be involved or whether anyone has been hurt.

How Seattle's Hazmat Teams Operate

When something suspicious shows up in a building or the air, Seattle’s Hazardous Materials Response crews are the ones in the heavy suits. These are specialized teams trained and equipped to identify and contain unknown chemicals, arriving with detection tools and decontamination units, according to a profile of the program on Firehouse. Standard protocol calls for setting up perimeters, checking air quality and taking samples before anyone is allowed back into the area.

Greenwood's Recent Emergency History

Greenwood is no stranger to high-stress scenes. A March explosion that destroyed several businesses and injured firefighters showed just how fast a leak can turn dangerous, as reported by The Seattle Times. That incident stretched local emergency crews and left a lasting mark on the neighborhood’s storefronts.

Advice For Residents

For now, officials want people to keep their distance and follow directions from crews on the ground until they declare the scene clear. If you notice a strong chemical smell or start to feel dizzy, head to fresh air right away and call 911 if you have serious symptoms. For questions about exposure that are not life threatening, you can call the national Poison Help line at 1‑800‑222‑1222 to reach local poison experts.

This story will be updated when Seattle Fire releases more information about what sparked the response and any impact on nearby residents or businesses. Until then, avoid the 13000 block of Greenwood Ave. N. and let the hazmat teams do their work.