Firefighters battling the Sand fire in El Dorado County and Amador County’s wine country continue to make good progress despite hot weather.

Containment has gone from 65 percent on Monday morning to 85 percent Tuesday evening as crews worked to strengthen fire lines and extended mop-up activities into the burned area, according to Cal Fire.

Rugged terrain, and hot, dry weather conditions, as well as mines in the area, remain a challenge for firefighters. Fire officials reported that the number of personnel at the scene was reduced by about 300 during the day as crews were released.

Acreage burned was increased Tuesday due to better mapping of the fire, according to a Cal Fire news release.

The fire broke out on Friday at 4:30 p.m. and is blamed on a vehicle igniting dry vegetation. Full containment is expected on Saturday.

All evacuations and all road closures were lifted Tuesday evening.

Fire details from Cal Fire:

Acres burned: 4,240

Homes destroyed: now at 19 as damage assessment continues

Outbuildings destroyed: 47

Total personnel on fire: 1,313