Seattle fire crews were upgraded to a 3-alarm response on Monday after a commercial warehouse fire broke out in the 800 block of NW 42nd St in Fremont. Firefighters on scene said they were dealing with a working fire and began evacuating the building as the response widened.
The scale-up matters because a 3-alarm call brings in extra resources fast, and this one was unfolding in a dense part of the city where smoke could quickly spread beyond the block. Officials asked people to avoid the area, and Seattle Fire Department officials told nearby residents to close windows and doors because of smoke.
Crews were trying to get access to the building while also shifting to a defensive strategy, putting water on the fire from a safe distance as conditions inside made an aggressive push harder to sustain. That approach usually means firefighters are protecting the structure and surrounding area first, rather than pressing deeper into the building until it is safer to do so.
The fire involved a commercial warehouse, but officials had not said what sparked it or whether anyone was hurt. For now, the main facts are the size of the response and the precautionary steps around it: a 3-alarm fire, a blocked-up warehouse fight, and a request for nearby residents to keep smoke out of their homes until crews can bring the blaze under control.

