Issued: Aug. 28, 2017
Forecaster. R. Graw, USDA
Forest Service
Tuesday - Aug. 29, 2017
The thermal trough, which has brought the hot and dry weather
and smoke from the Cascades into Western Oregon, will move east on Tuesday,
allowing for westerly winds to return to much of the forecast area. This should bring some relief to the coastal
areas. The Willamette Valley will
continue to experience some light smoke, as shown in Figure 1. (Note, dark red
indicates areas of heavier smoke, and pink indicates areas of light
smoke). Smoke will push east from the
fires continuing to affect the Rogue Valley, the Cascades, and
communities along the eastern flanks of the Cascades. Smoke light smoke and haze will be
noticeable in the eastern portions of the state, including the Columbia River
Gorge.
Figure 1.
Model-predicted 24-hour average smoke concentrations for Tuesday Aug. 29, 2017
Wednesday - August 30, 2017
An upper level trough will approach the state on Wednesday,
bringing stronger westerly winds. This will scour out any remaining smoke for
much of the Coast, and the entire Willamette Valley, giving some much needed
relief to Eugene. Smoke will continue
to affect the Cascades and particularly communities on the east side of the
Cascades in Central Oregon. Haze will
also be noticeable over much of the central and eastern portion of the state.
As always, please refer to the Air Resource Advisors’ reports on this blog for more detailed smoke forecasts for areas near the fires.
Figure 2.
Model-Predicted 24-hour average smoke concentrations for Wednesday
Aug. 30, 2017
