The airport fire, reported Monday afternoon in Trabuco Canyon, has spread and burned more than 55,000 acres in Orange and Riverside counties, but falling temperatures could slow the fire, officials said Wednesday.

The fire at the airport, which was only 0% under control on Wednesday afternoon, threatened more than 10,000 buildings in both provinces. Seven people were injured, including five firefighters.

“The fire moved across Ortega Highway last night. There was damage and destruction to some structures along Ortega Highway. We have damage assessment crews out today to see what the damage is,” said Captain Paul Holaday of the Orange County Fire Authority.

While firefighters battle the fire from the air and ground, they could get some relief on Wednesday if the weather improves.

“The fire has slowed down for us, so we can make more progress on the flanks of the fire,” Holaday said, adding that temperatures were about 15 degrees cooler on Wednesday and humidity was higher.

But because the wind phenomenon, the Elsinore effect, could cause erratic wind shifts, authorities continued to urge residents to follow evacuation orders and warnings.

Firefighters and emergency responders gained more access to firefighting resources when Gov. Gavin Newsom secured a grant from the Federal Emergency Management Agency, Cal Fire officials said.

Evacuation orders

Orange County

• Zones: ELC01, RSM03, ORT01

Riverside County

• Zones: LSN-1524, LSN-1525, LSN-1526, LSN-1623, LSN-1624, LSN-1625, LSN-1626, LSN-1627, LSN-1799, LSN-1803, RVC-1622, RVC-1724, RVC-1726, RVC-1728, RVC-1729, RVC-1800, RVC-1801, RVC-1804, RVC-1806, RVC-1807, RVC-1808, RVC-1809, RVC-1810, RVC-1867, RVC- 1868, RVC-1870, RVC-1936, RVC-1521, RVC-1725, RVC-1798, RVC-1865, RVC-1866, RVC-1933, RVC-1934, RVC-1935, RVC-1999, RVC-2074, RVC-2142, RVC-2143, RVC-1802, RVC-2000, RVC-2075, RVC- 2144, RVC-2197, RVC-2243

North of the San Diego/Riverside County border, south of the Orange County border, east of the Orange County border, and west of S Main Divide/Grand Ave.

Road closures

• Plano Trabuco / Joshua Drive
• Santa Margarita Parkway/Antonio Parkway
• Plano Trabuco/Robinson Ranch
• Avenida Empressa/Santa Margarita Parkway
• Antonio Parkway / Unfortunately de Paz
• Trabuco Gorge / Trabuco Creek
• Santiago Canyon Road
• Living Oak Canyon Road
• Ortega Highway (east of Quarry to Grand Avenue in Lake Elsinore)

Evacuation locations

Orange County

• RSM Bell Tower Community Center: 22232 El Paseo; Rancho Santa Margarita, CA (Open 24 hours)

Riverside County

• Temescal Canyon High School: 28755 El Toro Road, Lake Elsinore, CA
• Santiago High School: 1395 E Foothill Pkwy, Corona, CA
• An additional Evacuation Shelter has been opened at Temescal Canyon High School in the main gymnasium at 28755 El Toro Rd, Lake Elsinore, CA. The location is equipped with cots, air conditioning, Wi-Fi, water, snacks, and a welcoming staff.

Animal shelters

Orange County

• Large animal shelters
  • Orange County Fairgrounds: 88 Fair Drive; Costa Mesa, CA
  • Los Alamitos Racetrack: 4961 Katella Avenue, Cypress, CA
  • Nohl RaNch Saddle Club: 6352 E. Nohl Ranch Rd. Anaheim, CA
• Animal services
  • Ralph’s Supermarket Parking Lot: 31841 Santa Margarita Parkway; RSM, CA
  • OC Animal Care: 1630 Victory Road; Tustin, CA

Riverside County

• Jurupa Valley Animal Shelter: 6851 Van Buren Blvd, Jurupa Valley, CA
• An extra Large Animal Shelter is available at the Murrieta Equestrian Center at 42670 Juniper St, Murrieta, CA. Basic food and water are available at animal shelters. If your pets/animals have special diets or special needs, please bring any special food or medications with your animals.
• Riverside County residents needing assistance with large animal evacuations can call (951) 358-7387.