Timber (litter and understory)

Light logging slash

Brush (2 feet)

WEST ZONE: The fire continued to remain active in the Div I and Div N areas due to the poor overnight and daytime humidity recovery coupled with the high daytime temperatures. Short range spotting continue to occur along Hwy 88 and within interior islands due to the Probability of Ignition remaining at 89%. Hot material continues to be found near the control lines in the north and eastern divisions. Interior islands and stringers of timber continued to burn out. No growth occurred in the south, west, and northwest areas. Increase in calls for service in the recently repopulated areas.

EAST ZONE: Several days of moderated weather have assisted crews with reaching containment objectives. Southwest wind forecasted for today. Fuel moistures remain critically low for both live and dead fuels. SW winds are forecasted for next week and are associated with large fire growth. The Energy Release Component is above the 97th percentile. The Burning Index is just above the 90th percentile. Potential for wind-driven surface fire due to alignment. Expect most of the fire growth to be to the north and northeast. Expect an increase in fire activity with clear air. Fire behavior moderated the previous shift, expect similar fire activity.

A Fire Management Assistance Declaration was declared on August 17, 2021. Incident Period: August 14, 2021, and continuing.

(FM-5413-CA)

The Governor of California declared a State of Emergency for El Dorado County on August 17, 2021, due to the

Caldor Fire.

The Eldorado National Forest is closed from August 17, 2021, through September 30, 2021. (Forest Order No. 03-21-14) To better provide public and firefighter safety due to the ongoing California wildfire

crisis, USDA Forest Service Pacific Southwest Region announced a temporary closure of all National Forests in

California from Aug. 31, 2021 through September 17, 2021.

CAL FIRE IMT-6 and NIMO-2 are in command of the West Zone and CIIMT-4 is in command of the East

Zone. CAL FIRE IMT-2 will transition with CAL FIRE IMT-6 and assume command on Wednesday, Sept 8th at 0700 hours.

Fuels reduction projects that have been implemented around the community of South Lake Tahoe have been highly effective in providing opportunities for resources to successfully suppress fire.

WEST ZONE:

Observed: The inversion over the fire area broke around 0900 this morning with a very dry air mass. Temperatures reached mid-80's to lower 90's at higher elevations and the mid-90's at lower elevations. Relative humidity values ranged from 14% to 21% by 1400. Winds were generally out of the west 5-10 MPH with gusts to 14 MPH.

Forecast for tonight: Clear with areas of smoke. Inversions setting in after 2000 and persisting through the night. Temperatures will drop to 57-67 at the highest elevations and 70 to 80 in the lower elevations. Humidity recovery poor at 25-35 percent. Winds becoming downslope/downcanyon 4-9 MPH with gusts to 13 MPH in deepest drainages.

EAST ZONE:

Observations: High pressure and very dry air remained over the region with humidities dropping into the upper teens throughout the fire area again today. Ridge level wind were calm this morning and picked up out of the west and southwest with gusts around 20 mph in the afternoon. Surface winds were terrain driven over the fire, upslope and upcanyon during the day, with gusts around 15 mph in the late afternoon.

Wednesday Forecast: Dry and warm conditions will remain over the fire area on Wednesday with above average temperatures continuing as high pressure remains over the west. Humidities will drop into the midteens at all elevations again during the day with poor recoveries on mid-slopes and ridges. Light ridge winds in the morning will become westerly during the afternoon. Surface winds remain terrain driven with upslope winds 4 to 8 mph during the afternoon and gusts up to 15 mph in canyons.