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Oregon State Smoke Forecast for the Weekend of July 6-8, 2018

Forecast Issued:  Friday July 6, 2018
Forecaster:  Rick Graw, USDA Forest Service

Smoke conditions should improve throughout the weekend as the smoke from the fires in Northern California are moderated by a shift in winds. This forecast should be tempered however, by the potential change in fire conditions as fire-weather watches remain in effect in Northern California and Southern Oregon through Saturday evening.

Friday Evening July 6, 2018
The smoke which had been coming into Oregon from the fires in Northern California will begin to move easterly and dissipate this evening with only a slight amount of smoke remaining over the south-central portion of the state, as illustrated in Figure 1 below.

Figure 1.  Model-Predicted Smoke Impacts at 10 p.m. on July 6, 2018

Saturday, July 7, 2018
Tomorrow, light smoke (as indicated by the pink shading in the figure below) will be present over much of central and eastern Oregon as shown in Figure 2, but air quality should remain in the good category across most of the state. Most of the smoke will only be realized as haze. 

Figure 2.  Model-Predicted 24-hour Average PM2.5 for Saturday July 7, 2018

Sunday July 8, 2018
On Sunday, smoke will be even lighter than on Saturday and air quality should be good across the state, shown in Figure 3.

Figure 3.  Model-Predicted 24-hour Average PM2.5 for Saturday July 7, 2018

Disclaimer: Forecasting of weather, fire behavior, and smoke transport and dispersion is
challenging. While we strive to bring you the most up-to-date and accurate forecasts, conditions can and do change rapidly. Please take the appropriate action to protect yourself.