SEATTLE -- It's Friday the 13th, but really so far the only ones unlucky for weather are those who dared to either pour concrete or paint their house today. A moderate storm swept through Western Washington Friday morning, bringing some rain and wind but nothing special for November.
Some peak wind gusts include 57 mph at Oak Harbor, 48 mph at Seattle's Alki Beach, 46 mph at Friday Harbor and 45 mph in Bellingham.
The mountains also got a little dose of snow -- roughly 3-6" by midday.
Rain and wind are on their way down for the midday hours, which will be somewhat of a lull. However, as we get into the afternoon and evening, cooler air will be moving in behind the front. On top of that, a Puget Sound Convergence Zone is also possible to form -- likely to begin in Snohomish County this afternoon then drift south into King County this evening.
Snow levels will drop down to 750-1,000 feet, meaning if the zone set up shop in the right spots, Tiger and Cougar Mountain might get a little slush this evening. Below that in the 500-1,000 foot range, we could see a few flakes here and there, depending on the intensity of the precipitation. We're not expecting any accumulations -- in that sense, the snow might be seen, but not "herd".
There could be a little more snow at Stevens and Snoqualmie Pass, depending on where the zone sets up shop, but nothing too heavy.
We clear out overnight and with cold air in place, temperatures will plummet. Lows will reach the upper 20s to low 30s in many areas, meaning some spots might even see some patches of ice on the roads Saturday morning, but the main Seattle metro area should be a bit warmer to the mid 30s and not have freeze concerns.
Saturday starts dry and chilly, with rain developing late in the day.
The focus shifts from cold to warm for Sunday into Monday as a little bit of a Pineapple Express pattern develops. This looks like it'll bring heavy rain to the Olympic Mountains, meaning rivers that feed off the Olympics -- especially the Skokomish -- need to be watched. However, the angle of the jet stream is forecast to have enough northerly component that the stream of moisture is expected to focus more on the southern B.C. mountains than the Washington Cascades.
This means while there is some risk of flooding in the Northern Cascades too -- especially Whatcom County Rivers -- it's less than the Olympic Rivers. And the Central and Southern Cascade Rivers might not get much for rain at all (Green River is looking like it'll be fine). Still it'll bear watching as we get through the weekend.
Weather stays active into next week, but nothing particularly stormy.