My weblog on KNKX is discovered right here.
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Every resident of Puget Sound has a robust air conditioner at hand and that AC turned on at this time. An AC that limits the lengths of our warmth waves and attracts in cool air whereas throughout Puget Sound whereas Portland and the Willamette Valley are sweltering.
You could have observed the change being turned on at this time, with brisk winds from the north moderating the warmth. This AC happens due to the actual terrain of our area and the way warmth waves develop right here.
You can see the particular AC in motion within the subsequent determine, which reveals the floor air temperatures and winds at 2 PM. 90s in Portland and the Willamette Valley (pink colours), however greens and yellow round Seattle and Puget Sound-70s and 80sF.
Look on the winds! There are northerly over Puget Sound, drawing in air was was cooled over the Straits of Juan De Fuca and Georgia.
The observations at 2 PM assist this prediction (see beneath), with temperatures round 80F close to Seattle, however mid-90s round Portland. And northerlies round Puget Sound.
So why do we’ve this AC system? What is forcing the cool northerlies?
Glad you requested. The reply is revealed within the forecast sea stage pressures for two PM at this time (Saturday), proven beneath (the stable traces are sea stage strain and colours point out low-level temperatures). In just about all western WA warmth waves, a area of heat air and related low strain (the thermal trough) strikes northward out of California. You can see that function within the map/ With low strain south of us and excessive strain to the north, winds from the north are produced (northerlies), which brings cool air in direction of Puget Sound
The winds on prime of my constructing on the UW are actually gusting to 18 knots from the north-northwest (see beneath).
And sitting outdoors penning this weblog, my wind chimes are stirring proving a nice music accompaniment to the cooling winds.
The drawback we’ll quickly face? As the warming continues the low strain will transfer proper over us, shutting down our native AC. Tomorrow will likely be brutal, with temperatures surging into the mid-90s round Puget Sound.
But don’t be concerned….we’ve ANOTHER AC able to go, with cool air pushing in from over the Pacific on Monday morning.