Dense Smoke — Lewiston Area, Idaho

2017-09-04 to 2017-09-08 · Lewiston Area, Idaho

Event narrative

The Idaho Department of Health and Welfare issued a press release advising of Unhealthy to Hazardous air quality through out Idaho due to smoke from regional wild fires.

Wider weather episode

Smoke from numerous regional wildfires in Canada, Montana, Washington and Idaho fumigated north Idaho from September 4th through the 8th. Air Quality sensors throughout north Idaho recorded Unhealthy and Very Unhealthy readings during much of this period, with local reports of Hazardous air quality. Public Health Advisories were issued by state authorities to limit outdoor exposure and activities. A weak cold front on the 8th brought enough wind to ventilate the region and partially clear the smoke from the area.

Source: NOAA Storm Events Database, event_id 722850. Narrative written by the NWS forecast office that issued the report.