Kind of odd, perhaps due to more non-regional persons moving to their area, for lagging performance in timely preparation for scheduled flights in bad weather.

When I was visiting Seattle in about 1991, first time on the ground and not inside the airport during layover, I noticed the lack of simple snow removal throughout the area; even the freeways shut down for 1/16th inch of snow. The only cars on the roadways were Subaru, and an occasional 4x pickup. Guess anyone with a tricked out 4WD kept it in their three car garage, least it get a ding or other mishap.

The problem was a lack of ability to multiple-task their equipment to clear roads (& runways?) already in possession by various agencies. Not like they had to ship it 1500 miles from somewhere, they have rails.

On first opportunity (there were several, some for each observed local issue) I asked why none of the parked giant street sweeper vehicles, those that don't vaccum, weren't in use on snow. A few gasps. Then they were.