September 12, 2020 - The U.S. Forest Service reports smoke and air quality outlook for the San Joaquin-Yosemite areas, due to the Creek Fire.

Fire: Yesterday’s smoke inversion again helped moderate fire behavior, with 6% containment along the western edge of the fire, and similar smoke production. Today will likely bring more active fire under a persistent, but possibly thinner, inversion and terrain-driven winds, which again turn SW this afternoon.

Smoke: Today, the smoke inversion may thin somewhat as SW winds aloft strengthen, but is still likely to remain intact, with peak hours of smoke still in the Very Unhealthy/Hazardous range still possible at sites under the inversion. Upslope SW winds in the San Joaquin River drainage will also likely bring heavy smoke to our east-side sites this evening. Tomorrow those winds might strengthen and further thin the inversion, but it may remain intact in many sites, where the same pattern is likely.

Note: Forecasts reflect particulate matter from smoke only – not ozone or dust. Poor visibility, potentially less than 1/4 mile is possible under the smoke inversion.

Source: USFS