A flash flood watch is in place along Highway 2 where the Bolt Creek fire has left a burn scar.
The National Weather Service on Monday said flash flooding is possible through Tuesday afternoon in the area that includes Skykomish, Grotto and Baring.
The weather service is expecting between a half-inch and an inch of rain through Tuesday. The flood watch may escalate to a warning if a half-inch of rain accumulates in the scar within an hour, meteorologist Dev McMillian said Monday.
The Washington Department of Transportation on Monday said while Highway 2 is open, closure is possible if debris ends up on the road.
People should have an evacuation plan and emergency kit ready, and be prepared to follow evacuation orders.
The weather service advises the public to consider leaving the debris flow danger area before heavy rain arrives.
Forecasters previously warned that rain and wind could bring landslides and knock down trees near homes, trails and roads.
Debris flows are dangerous because they are fast and unpredictable, and can travel faster than a person can run or a car can travel, according to the weather service. It may start in a stream channel then jump out and spread through a neighborhood.
The Bolt Creek fire scar is especially susceptible to flooding and mudslides, Matt Dehr, a meteorologist with the Washington State Department of Natural Resources, has said. The Bolt Creek fire burned more than 14,600 acres, or 22.8 square miles.
