Matt Gutman reports on the Alisa Fire, which grew massively in size overnight, forced evacuations and shut down a major highway.

The highway leading to the world’s two largest sequoia trees will stay closed.

The fire closed the 101 freeway in Santa Barbara County, one of California’s most important roadways.

The preventative shutdown is impacting thousands in California as high winds bring deadlier blazes.

The fire that was first reported Monday afternoon has grown to 6,000 acres.

Officials say fire crews made significant progress overnight against a wildfire burning for nearly a week in Southern California coastal mountains

A historic drought tied to climate change is making wildfires harder to fight.

The Alisal Fire in Southern California has already exploded to about 6,000 acres.

Ginger Zee has the latest developments on the fast-moving Alisal Fire, which has grown approximately 10,000 acres in 24 hours.

Blustery winds are still surging through California, fanning wildfires.

Pacific Gas & Electric warned thousands of California customers that their power may be shut off to help prevent wildfires due to severe wind and drought conditions.

Authorities say Northern California wildfires may have killed hundreds of giant sequoias, although it may take months to fully assess the damage

A crew of Old Irish Goats and their herder are being deployed as part of a bid to curb wildfires in a wild area of Dublin, Ireland.

U.S. officials have approved a long-lasting fire retardant that could significantly aid in fighting increasingly destructive wildfires

Wildfires and their lasting effects are becoming a way of life in the West.

Fire destroyed more than 100 buildings near Shasta Lake in Northern California.

A forest fire has displaced thousands of residents in Northern California.

PG&E also remains on criminal probation for a 2010 pipeline explosion.

Thousands of people are under evacuation orders as a wildfire suspected of being started by arson rages in Northern California

Firefighters hope shifting winds and cooling temperatures over the next few days will aid their efforts to battle a destructive wildfire in a drought-stricken forest in California’s far north

Thousands of firefighters are battling the KNP Complex Fire in Sequoia National Park to help save the park’s famed Giant Forest.

Smoke and flames swirl dangerously close to a road in California as the Fawn Fire spreads. The blaze has exploded to 5,800 acres and is only 10% contained.

Multiple homes near Redding, California, have been destroyed in the Fawn Fire. A woman was arrested on Friday and charged with arson.

A woman has been arrested on suspicion of starting a Northern California wildfire that spread rapidly, burning homes and prompting evacuation orders in a rural community

A man and his daughter are bringing donated motorhomes to people who have lost everything in wildfires in the American West

The fire painted the night sky red as seen at the Sequoia National Forest in California.

The KNP Complex Fire is rapidly growing as it threatens homes and giant sequoia trees in California.

Wildfires swirling around California's giant sequoia trees are prompting more evacuations as they spread toward communities surrounding the forests.

Two lightning-sparked wildfires in California merged and made a run to the edge of a grove of ancient sequoias, driving away firefighters as they try to protect the world’s tallest tree

Firefighters use fire-resistant blankets at California's famous Sequoia National Park to keep some of the world's largest trees safe from threatening wildfires.

Crews are working to protect California's famed groves of giant sequoias, as multiple fires continue to burn unabated.

South Lake Tahoe locals gathered to cheer on the firefighters who saved their city and successfully contained 71 percent of the monstrous Caldor Fire.

Elsewhere, two California fires that have caused extensive destruction.

With a wildfire no longer threatening Lake Tahoe, residents, tourists and scientists drawn to its clean alpine air, clear blue waters and fragrant pine trees now wonder about the long-term effects that remain

The Nevada National Guard captured video filmed from a unique perspective: inside the bucket that it used to dump water on the Caldor Fire in California.

Sequoia National Park has been shut down and its namesake gigantic trees could be in danger as forest fires burn in steep terrain across California’s Sierra Nevada

Lake Tahoe-area residents lined the streets to cheer for firefighters and first responders who have been battling the massive Caldor Fire.

Firefighting crews near southern Spain's Costa del Sol were hoping much-needed rainfall to help them extinguish a major wildfire that has ravaged 7,700 hectares (19,000 acres) in five days and forced 2,600 to evacuate

Authorities have reopened nearly all lanes of a major Southern California highway as firefighters made progress on a wildfire that jumped across the road

California's interior is hot and dry and the forecast calls for a risk of fire-starting dry lightning as thousands of firefighters already have their hands full with wildland blazes

The ongoing Dixie Fire has become the second-largest in the state's history.

A huge California wildfire near the Lake Tahoe resort region is about half contained

People who fled South Lake Tahoe under threat of a wildfire have been trickling back home, but many shops remained dark Monday and the resort town's normally bustling streets remained quiet

ABC News’ Ginger Zee has the latest on the wildfires burning in California, prompting new evacuations.

Tens of thousands of people forced to flee South Lake Tahoe because of a California wildfire could begin to return to their homes

Wildfires burning in the U.S. this summer have upended plans for countless outdoor adventures

Residents hope for a chance to return home as firefighters make progress.

Officials say better weather has slow the growth of the huge California wildfire that has been threatening the Lake Tahoe resort region

There are differences between price-gouging laws in Nevada and California.

Better weather is helping in the battle against a huge California wildfire threatening communities around Lake Tahoe, a place known the world over as a recreational paradise