Three large wildfires, the Mission Fire in Madera County, the Pier Fire in Tulare County, and Railroad Fire in Madera/Mariposa counties, have prompted local air officials to extend the current health cautionary statement through the week. Currently smoke impacts are concentrated in the mountain and foothill areas of the air basin, but impacts on the Valley floor are possible until the fires are extinguished. Overnight and early morning downslope flow may cause smoke to drift toward the San Joaquin Valley.