Single Publication

Smoke Outlook for Central Sierra and Greater Tahoe Area, Mosquito Fire (Sunday, 09-18-22) 

Fire
The fire is currently over 74,500 acres and 34% contained. Fire area growth may slow with rain, clouds, and cooler temperatures in the forecast. However, some fire growth due to persistently dry fuels and gusty winds is still expected and will contribute to continued smoke production. Heavier rain showers are expected late tonight through Monday, with isolated thunderstorms possible on Tuesday. Wet weather is possible into Wednesday.

Smoke
Fire activity under weakened winds contributed to significant smoke accumulation throughout most of the forecast area in the morning hours yesterday. With increased humidity and cooler temperatures moderating fire activity, smoke cleared across much of the forecast area by early afternoon. Portola and Truckee both continued to experience USG/Unhealthy air quality throughout the evening/night and into today as they are more directly in the path of the smoke plume. As of this morning, air quality continues to improve east, south, and west of the fire area. With heavier rain showers forecast for tonight through Monday, air quality is likely to continue improving in the coming days. USG/Unhealthy is still likely in Portola and Truckee depending on fire activity and plume direction today and tomorrow. Caution is advised when traveling along roadways in areas with smoke and reduced visibility.