During the next weeks, a series of potent plumes of moisture (water vapor), commonly known as atmospheric rivers, will be arriving on the West Coast, and we in the Pacific Northwest will get a substantial taste of it.
Much of the arriving moisture will have traveled thousands of miles from Southeast Asia!
Let me show you forecasts of these atmospheric rivers. Red colors indicate the most potent areas of water vapor. At 6 PM tonight (Tuesday), there is an atmospheric river with a tail that extends thousands of miles to the west.
Next Monday, a potent, intense river will push into north/central California
These atmospheric rivers will bring lots of precipitation to our region. Below is the total through Sunday morning. Our regional mountains get hit pretty hard. Even more during the next week (not shown).
The latest seasonal forecats are for wetter than normal conditions over the Northwest this winter (see below). Not surprising for a La Nina year.
Thank you for these posts. They help me plan my daily activities. So grateful.
ReplyDeleteThank you for this blog. So grateful.
ReplyDeleteThis is the cats meow forecast we remember you by all year: the onslaught of our annual Thanksgiving rivers. No drumroll needed this one takes the floor by it’s sheer onset.
ReplyDeleteIt's the time of year where the extended forecast on weather.com just shows rain icons from about 8-15 days out. If there's more than a 50% chance of a couple hundreds of an inch of rain falling at some point in the day, the rain icon is a safe (but ominous looking) bet.
ReplyDeleteAny concerns regarding wind for this weekend?
ReplyDeleteI'm a bit concerned, particularly coastal areas, where weather.com has sustained winds of 15-30 mph predicted across multiple days of the next week. Downed trees, fallen limbs, and power outages are likely inevitable.
DeleteA fine setup for hungry ungulate tummies and blacktail deer hunting success on this last weekend of the WDFW west side season.
ReplyDeleteThank you for your post about the atmospheric Rivers coming to us in the northwest.
ReplyDeleteLiving in a flood plain, I appreciate these forecasts. Time to pick up the yard and elevate the various pieces of equipment.
ReplyDeleteYes I have concerns
ReplyDeleteThese atmospheric rivers appear to be coming from Thailand / Indonesia / Malaysia; I worked in KL it was steamy hot, rain was warm. Do these plumes arrive warm, or have they cooled down over the journey...
ReplyDeleteThe latest runs of both the Euro and GFS are fascinating. If they verify (a big if, especially lately), there will be quite a bit of excitement coming for anyone living anywhere near one of the big lowland rivers!
ReplyDeleteThe forecast for the Bellingham area went from full atmospheric river ca. Monday, with >1" of rain on Friday, to completely run-of-the-mill showery October day this morning with just over 1/3". It's breezy but nothing to write home about. It appears that active weather is forecast for the near future, so perhaps something more interesting will come our way.
ReplyDeleteThis one lived up to the billing ,1.7" on Friday. Good to see California will get one, they really need it central and south.
ReplyDeleteWish we could get one of that rain down here in southern California
ReplyDelete