Photo taken on Sept. 9, 2020 shows the gloomy sky caused by smoke from the wildfire at Monrovia in Los Angeles, the United States. As a wildfire in Angeles National Forest continued spreading and the dangerous Santa Ana winds was predicted to hit the area Wednesday evening, several cities in Los Angeles county along the foothill was under evacuation warnings. The blaze, dubbed Bobcat Fire, scorched 10,344 acres (41.86 square kilometers) with no containment as of Wednesday morning, according to InciWeb, an interagency all-risk incident web information management system. (Photo by Zeng Hui/Xinhua)

Photo taken on Sept. 9, 2020 shows the gloomy sky caused by smoke from the wildfire at Azusa in Los Angeles, the United States. As a wildfire in Angeles National Forest continued spreading and the dangerous Santa Ana winds was predicted to hit the area Wednesday evening, several cities in Los Angeles county along the foothill was under evacuation warnings. The blaze, dubbed Bobcat Fire, scorched 10,344 acres (41.86 square kilometers) with no containment as of Wednesday morning, according to InciWeb, an interagency all-risk incident web information management system. (Xinhua/Gao Shan)

Smoke from the wildfire is seen at Azusa, Los Angeles, the United States, Sept. 9, 2020. As a wildfire in Angeles National Forest continued spreading and the dangerous Santa Ana winds was predicted to hit the area Wednesday evening, several cities in Los Angeles county along the foothill was under evacuation warnings. The blaze, dubbed Bobcat Fire, scorched 10,344 acres (41.86 square kilometers) with no containment as of Wednesday morning, according to InciWeb, an interagency all-risk incident web information management system. (Xinhua/Gao Shan)

Photo taken on Sept. 9, 2020 shows a board showing roads near fire area being closed by law enforcement officials due to the wildfire at Azusa, Los Angeles, the United States. As a wildfire in Angeles National Forest continued spreading and the dangerous Santa Ana winds was predicted to hit the area Wednesday evening, several cities in Los Angeles county along the foothill was under evacuation warnings. The blaze, dubbed Bobcat Fire, scorched 10,344 acres (41.86 square kilometers) with no containment as of Wednesday morning, according to InciWeb, an interagency all-risk incident web information management system. (Photo by Zeng Hui/Xinhua)

Smoke from the wildfire is seen at Monrovia, Los Angeles, the United States, Sept. 9, 2020. As a wildfire in Angeles National Forest continued spreading and the dangerous Santa Ana winds was predicted to hit the area Wednesday evening, several cities in Los Angeles county along the foothill was under evacuation warnings. The blaze, dubbed Bobcat Fire, scorched 10,344 acres (41.86 square kilometers) with no containment as of Wednesday morning, according to InciWeb, an interagency all-risk incident web information management system. (Photo by Zeng Hui/Xinhua)