The fire that began Friday afternoon on or near a wood-products plant quickly blew into a neighborhood on the northern edge of Weed but then carried the flames away from the city of about 2,600.
Evacuees described heavy smoke and chunks of ash raining down.
Annie Peterson said she was sitting on the porch of her home near Roseburg Forest Products, which manufactures wood veneers, when "all of a sudden we heard a big boom and all that smoke was just rolling over toward us."
Very quickly her home and about a dozen others were on fire. She said members of her church helped evacuate her and her son, who is immobile. She said the scene of smoke and flames looked like "the world was coming to an end."
Suzi Brady, a Cal Fire spokeswoman, said several people were injured, NPR reported.
Allison Hendrickson, a spokeswoman for Dignity Health North State hospitals, said two people were brought to Mercy Medical Center Mount Shasta. One was in stable condition and the other was transferred to UC Davis Medical Center, which has a burn unit.
MA/PR