Monday December 9
No question that a wet pattern returns, as a series of Pacific storms arrive in the PNW. Let’s take a look. Mug time.
A couple more dry days to get the week going. Rain will return late Wed. Wet overnight into Thu, with breezy conditions in OR (esp southern OR) as a Low moves onshore along the central OR coast. This is not a super wet system, so rainfall will be rather light; although a good 1/4"-1/2” possible in northern CA.
The next system - one modeled as MUCH larger & STRONGER - will approach the OR coast overnight Friday the 13th. This is the strong storm we made note of last time, it’s just delayed. Models have toyed with great uncertainty as to the track, barometric depth, and timing over the past few days.
Rain will also be in play this coming weekend. Wet Sat. Early Sunday may yield a short break in precip before the next Pacific storm moves onshore. Expect steady moderate-to-heavy precipitation Sunday through earlt Monday, turning showery in the afternoon. It will be quite blustery, as well.We forecast the storm will move inside the 130W line, west of Brookings, as it approaches landfall around the northern WA coast Saturday afternoon, Nov 14. This storm could be a strong WIND producer, depending on just how deep the Low develops as it approaches; current projections --> 980mb slowly filling to 988mb by landfall. Hence, we will hold to a “Yellow Alert”. Best to plan forpossible power outages, esp along the coast and interior. Models struggle with these types of details until hours before the actual event; we don’t hesitate to encourage preparation, just in case. A 40-50 mph gust can mess with trees!
The week of Dec 16-20 is trending WET, with short breaks in the precip most of Tue, but another blustery system moves in Tue night - mainly over western WA/BC. Wednesday Dec 18 looks quite WET for western OR, WA, BC. Rain will let up on Thu for areas south of the Puget Sound, but remain in play from Olympia north. Generally DRY for most of the PNW late Thu through daylight hours Saturday Dec 21. Saturday night into early Sunday, rain returns as a cold front passes. Turning COLDER Sunday into Monday the 23rd. East wind begins.
🎄The White Watch - Christmas Week. Chilly, dry air mass in place as High pressure to the east heightens. IT WILL TURN WINDY out of the Fraser & Columbia Gaps. Not an Arctic outbreak, as the High pressure Dome will not be super-cold; still, the pattern will keep Christmas Eve and Christmas Day dry & chilly. No snow. We’ll update The White Watch on Friday, as well as the latest on the potential wind event.
Side Bar: The Santa Ana winds will kick up this week in California. The upper plains will turn BITTERLY COLD, as a full Arctic Blast descends out of the Canadian interior this week. East coast will also turn winter-cold, with a Nor’Easter storm mid-week.
Community Center sign just west of Denver: “Huge fight at local seafood diner! Battered fish everywhere."
-Rufus
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