Dept. of Ecology issues air quality update for eastern WA
The National Weather Service has issued an air stagnation advisory for Whitman, Spokane, Adams, Grant and Lincoln counties, and populated areas of Garfield and Asotin counties until 5 pm Tuesday.
An air stagnation advisory indicates that due to limited movement of an air mass across the advisory area, pollution has the potential to increase to dangerous levels.
Most of eastern Washington, including Adams, Columbia, Franklin, Garfield, Lincoln, Walla Walla and Whitman counties is in the 'Unhealthy for Sensitive Groups' category for air quality.
Benton County is in the 'Moderate' category.
Below is an air quality update from the Washington State Department of Ecology:
Air quality in most areas saw considerable improvement on Saturday.
Clearing will continue through Sunday evening, but there could be areas in and around the Columbia Basin that experience smoke for a short time today.
A period of prolonged stagnation sets up through most of Washington starting Monday, with winds being mainly terrain driven.
Temperature inversions are expected to be strong but are forecasted to break up during the day in most places.
Yet with light and variable winds, pollutants will not disperse as well.
While it is hard to pin down exact details for each community, in general most areas are likely to see air quality degraded to some extent.
Communities close to smoldering fires are likely to be impacted throughout the day to varying degrees.
Partial daytime clearing in most areas with the least clearing in sheltered valleys, seems to be a good bet.
Models are suggesting mildly offshore pressure gradients, which could push a little smoke over the Cascades into western WA over the next few days.
Please note that the Governor's Office has issued a burn ban in eastern Washington.
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