Be extra careful on your walks and drives.
Overnight freezing temperatures throughout the region will cause black ice to form over some surfaces.
“Really, the big story is we’re going to have pretty cool freezing temperatures overnight and through the weekend,” said Kirby Cook, science and operations officer at the National Weather Service in Seattle.
There could be a rain or snow mix, but “even without precipitation, untreated road surfaces or sidewalks could refreeze and that’s going to hang in there through the weekend,” Cook said.
There’s a chance of snow showers in Western Washington, with areas at lower elevations seeing rain and higher elevations seeing snow, according to the weather service.
Temperatures are below average for this time of year, and ranged from the mid-30s to 20s on Thursday. They won’t rise until Friday afternoon and evening, Cook said.
“Even then, the high temperatures Friday are expected to be the mid-to-upper 30s, still much cooler than normal,” he said.
The normal highs for this time of year are in the upper 40s.
The average temperature for Seattle in November was 42 degrees — 4.5 degrees below normal — tying 1993 for the seventh coldest November in 78 years, reports the National Weather Service. November 1985 holds the record for coldest November in Seattle, with the average temperature of 35.8.
High temperatures Saturday will reach the upper 30s to low 40s throughout the region, though temperatures around 20 degrees are expected overnight, said NWS Seattle meteorologist Kayla Mazurkiewicz. More of the same is expected Sunday.
While there are significantly fewer reported power outages than earlier this week, some Puget Sound Energy, Seattle City Light and Snohomish PUD customers are still without power.
Some 1,533 Puget Sound Energy customers were in the dark from 50 active outages as of roughly 5 p.m. Thursday. Meanwhile, 1,133 Snohomish PUD customers were without power and fewer than 500 Seattle City Light customers remained in the dark.
As of 5 p.m., 177 flights arriving at or departing from Seattle-Tacoma International Airport were canceled and 169 were delayed, according to the tracking website FlightAware.
Another storm system will be moving into Western Washington from late Friday into Saturday morning, according to the weather service. The system could be similar to Tuesday’s, Cook said, predicting that it may be a little too warm to see snow during Friday’s evening commute, but snow is possible at higher locations.
The Puget Sound region will see heavy precipitation, mostly in the Olympic Peninsula, while the Seattle metro area will see scattered showers Friday and through the weekend, Mazurkiewicz said.
