Tonight, the nation's largest active wildfire is quickly growing and showing no sign of slowing down. The park fire, now more than 350,000 acres, quickly becoming one of the largest in California history. Nearly 4000 firefighters battling the flames, swirling into fire. Tornadoes chewing unchecked through dozens of homes. In northern California. What started as a small brush fire is now a sprawling behemoth burning through thousands of acres every hour. Lassen National park closed, posting this eerie photo of smoke filled skies and evacuating campers. New satellite images capture the fires exponential growth, spawning vast expanding clouds of smoke. The park fire is among nearly 90 active fires consuming the west, plummeting air quality, sending plumes of smoke seen as far east as New Hampshire. The evacuation zone covering the town of paradise devastated by the campfire six years ago. The deadliest and most destructive wildfire in California history. That took the home of volunteer firefighter Craig Kielb moved up here because we.

Just love living in the woods. Now, in hindsight, second guess that, but I still will. I'll do it again.

Lance and Patricia Conlon are one of thousands of families forced to flee.

We were both survivors of the campfire. It took us 6 hours to get out, so we didn't want to experience that again.

It wears on our community. There is so much trauma. Survivors from a terrible legacy of fire riding yet another one out.

We by the grace of God, survived both incidents and we'll survive this one.

And thankfully, the weather here is cooperating, allowing firefighters to get some level of containment on this fire. Now up to 12%. But with how big this fire is and how much fuel there is left to burn, the nation's largest fire is expected to get even larger.

Lester, thanks for watching. Stay updated about breaking news and top stories on the NBC News app or follow us on social media.