Smoke mostly up north and across the middle of Idaho

Today, smoke impacts are expected to be greatest over the Panhandle and south to the Grangeville area with lesser impacts over south-central and eastern Idaho. The highest air quality monitor values should be expected within the valleys and drainages from the Canadian border within the Purcell Trench and south along the western border of ID/WA into the Clearwater drainages into the Palouse. Smoke over the Central Idaho Mountains will move east, but should miss Salmon this afternoon and stay to the south. Smoke should lift during the late afternoon before settling again in the evening. Smoke looks to have impacts from the South Fork of the Salmon and east into the Upper Middle Salmon, Middle Salmon, Upper Salmon, Pashimeroi, and Lemhi into the Upper Snake. 

This evening, smoke should drain into the Upper Snake via the Lemhi and Birch drainages moving south to Pocatello and east to Island Park. It looks like there will be local nighttime impacts in the vicinity of McCall. The Panhandle will also be heavily impacted this evening with smoke settling within the Purcell Trench down into Spokane while the Clearwater looks to experience lesser impacts.

This image depicts forecast smoke impacts to be within the drainages of the Purcell Trench across the Panhandle, the drainages around McCall and into the Lower Payette Valley, and across the eastern Central Idaho Mountains into the Upper Snake River Plain.

Airfire-Bluesky 3km model forecast initialized 00Z 08/15/2018 and valid 05Z 08/16/2018 (11pm MDT 08/15). Data Source: Airfire - Bluesky