Updated Friday 5:10 a.m.
It's Black Friday, and it will be a blue sky Friday again after we wrap up the thick morning fog. The fog, though, is thick in some spots, and because temperatures are starting out well below freezing throughout most of the Sound, freezing fog could lead to black ice on the roadways. If you're heading out to the big sales this morning and see fog, just count on the fact that it is most likely freezing against the pavement and creating a very slippery surface. Drive carefully!
Eventually the same clear skies that let the heat out at night will let the sunshine back in, and we'll warm into the low 40s near the foothills, the middle 40s by the waterfront, and upper 40s near the ocean beaches. Winds will be very light, and with a strong ridge of high pressure in place, any pollutants and wood smoke are forced to stick around---an air stagnation advisory is in place until at least Monday, as the weather pattern isn't expected to change much for the next several days.
Therefore, we'll keep this quiet scenario on repeat until the middle of next week. Look for a string of foggy, sub-freezing mornings and sunny but chilly afternoons.
A pattern shift looks like it will nudge out this stubborn high pressure by the middle of next week, bringing a return to the rain (and mountain snow--woo hoo!) by Wednesday and Thursday.
Until then, stay warm, and have a wonderful holiday weekend!
Meteorologist Shannon O'Donnell
The KOMO Forecast Team