FRESNO COUNTY, Calif. (KFSN) -- Crews are working to gain ground on the Basin Fire that's burning in the Fresno County mountains.
The blaze burning in the Sierra National Forest is north of Pine Flat Lake and south of Shaver Lake and Wishon Reservoir.
People in the area need to be alert to the possibility of low visibility in the mountains and poor air quality conditions.
Hundreds of firefighters are on the front lines taking on the largest wildfire burning in the state.
The Basin Fire, east of Pine Flat Reservoir, is currently just over 13,000 acres.
Evacuation orders and warnings remain, but firefighters have increased containment to 26 percent.
The high heat is causing an addition challenge for crews on the ground.
Three firefighters have suffered heat-related illnesses while battling the Basin Fire in Fresno County.
Two were flown out by helicopter to Community Regional Medical Center in Downtown Fresno. The other firefighter is recovering in the fire camp.
As of Tuesday at 5:40 p.m., the Basin Fire had charred over 13,819 acres. Containment has slightly increased to 26%.
Many areas remain under an evacuation order or warning.
Crews have slowly started to gain containment on the Basin Fire in Fresno County.
As of Tuesday morning, the flames are 13% contained and have charred 13,661 acres.
The Basin Fire is currently the largest wildfire burning in California.
Despite the hot weather, crews are working hard to keep the fire from spreading.
Crews battling the Basin Fire are dealing with triple-digit temperatures as an excessive heat wave hits the Central Valley over the next week.|
Officials say their goal is to keep crews safe and hydrated with the upcoming heatwave.
FULL STORY: Triple-digit temperatures creates concerning scenario for firefighters battling Basin Fire