You know this is going to be a bad film right from the beginning : The fire can be seen from a road - yet they drop in smoke jumpers? You don't jump into a fire that you ca see from the road. After the jumpers get on the ground, the "veteran" says he wants to attack the fire from the uphill side? Fire always runs uphill! Ask the guys that died at Mann Gulch or Storm King Mountain in Colorado how attacking fires from uphill works out. When they are walking to the fire, the sound of the wind is blowing loudly in the background, but none of the vegetation is moving at all and the fire isn't wind blown. After they have tried for a few minutes to put out the fire, a Sikorsky S76 helicopter appears and makes a water drop right on the fire without any planning? If they could have put it out with a water drop, they would have done that first. When the fire is "contained" and the entirely bogus rescue has been carried off, the "chief" calls for a helicopter and flies back to town - if they could have flown into the fire, then they would have sent a helicopter attack in, not smoke jumpers.
Later, after commandeering the helicopter to look for her daughter, the "chief" rappels down from the helicopter, (without throwing any rope out first) in to trees and abandons the firefighting effort. Then she gets stuck in the tree, (while still attached to the helicopter), and then falls out of the tree while trying to get down.
Unfortunately, the movie goes down hill from there. The dialog is terrible. The plot is contrived, (and entirely predictable). The special effects are about what I would expect from this kind of movie, in other words, really bad. Acting swings from non-existent to way over acting. If a movie has a good plot, sometimes you can be persuaded to suspend belief enough to enjoy the movie. In other instances, if the special effects are outstanding sometimes you can live with no plot. This is not either of that those types of movie.
Even if you know nothing about wildland fires or wildland fire fighting, this movie is not worth the film used to make it. If you like movies with plot, dialog, acting and a decent premise, this is not one of them.
Apparently, this movie is also shown under the title, "California Firestorm." If anything, that is even a less apt title than "Inferno."