This article describes the huge, numerous, and threatening wildfires threatening people and grapes. Deaths are already being reported. Huge areas are under evacuation orders.
Epona Farm is presently 17 miles west of the area under an Evacuation Level 2 Order (meaning, "be ready to go if we issue a Level 3 order"), from a large set of fires burning on the west slope of Mt St Helens. The fires themselves are 25-35 miles away from us. The winds, which have brought us so much smoke for 3 days now and at times completely obscured the sun, are about to shift, and by Saturday we should see clear skies again. At times the smoke has been at the "unhealthy" level.
Smoke taint is caused by smoke phenols (from burning wood) attaching to grape skins and binding to sugars. Because the phenols are bound to sugars, they are not detectable in the grape (unless you run a lab test, but the labs are backlogged for weeks and the grapes are ripe now). But once the wine is made, the alcohol splits off the smoke phenol and it re-appears in the wine. At small levels it can add an interesting and nice complexifying element, but at high levels the wine is ruined, and there is no practicable fix for that fault.
Dick Erath, one of Oregon's wine pioneers, just advised me that the Willamette Valley saw more smoke than this, for more days, in a past year, and yet there was no smoke taint in their wines that year. We're in the middle of grape and apple harvest, and we'll find out once the wines are made, whether they have smoke taint. At this moment, I feel fairly confident they will not.
The Willamette Valley (and Napa and Sonoma) are under even denser smoke, so that is a threat to many many high-value commercial wines. The first photo is from Oregon (from the article I've linked here), and the second photo is from our farm (near Woodland WA) yesterday.
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