A slim plume of comparatively dense smoke from the Bolt hearth has been pushing into western Washington the previous couple of days.
And at the moment could be the worst of the interval.
The 11 AM floor air high quality community run by Purple Air exhibits the smoky air (crimson colours are the worst) transferring westward out from Steven Go freeway into Everett and north Seattle. I can scent the smoke right here on the UW.
The high-resolution seen satellite tv for pc picture this morning clearly exhibits the plume of smoke following by way of the comparatively slim Skykomish River valley and spreading out because it hits the lowlands.
Close to dawn this morning, the smoke plume was obvious trying northward by the Seattle PanCam.
Though not unfold horizontally, the Bolt Hearth remains to be smoldering and burning internally, producing important smoke, as evident from WSDOT cams on Route 2.
The meteorology is attention-grabbing.
Cool air produced by the longer nights drains into river valleys (just like the Skykomish) after which jets out into the lowlands, injecting the smoke into populated areas every morning (see plots of the quantity of particles within the air above Monroe, WA the previous few days). Later within the afternoon, growing mixing by convective mixing (produced by floor heating) tends to dilute the smoke concentrations.
The meteorological “downside” is that now we have a really weak strain sample over us proper now, with little clear, onshore circulation (see climate map for this AM, exhibiting sea degree strain).
Tuesday will not be significantly better, however the strain sample ought to change on Wednesday afternoon, with way more onshore and northwesterly circulation transferring in.
