"I looked out the window and I saw a tornado," said Robin McClyde who works at a fast food restaurant in the area. She likened it to similar to dust devils seen in the Southwest. "It was swirling pretty good."
She said it caused some damage to a neighbor's home and then briefly knocked out power.
"Then it dispersed and dropped all the debris in the road," she said.
Michael Tonkin said he heard his whole house shake.
"Thought it was an earthquake and walked outside and it was all gone," he said.
His carport roof was now on the other side of the road, a pontoon boat inside still missing.
"I just looked and everything was everywhereI didn't know what the hell happened," he said.
Some photos submitted to KOMO News show other damage, including a tilted power line, damage to a building's awning, and a toppled street sign.
There are no reports of any injuries and the National Weather Service would have to confirm any tornado.
There have been confirmed reports of pea-sized hail across the foothills in strong thunderstorm cells, including Lake Stevens, Lake Cavanaugh and near Eatonville.
If the storm is eventually confirmed as a tornado, it'd be the first in Western Washington since a tornado last September damaged a building and a few homes in Frederickson.
Washington averages about two tornadoes a year.