Evacuation warnings for residents who live near a fire that erupted on the north side of Corona Municipal Airport and burned about 50 acres were lifted Wednesday evening.

The non-injury blaze was reported shortly after 1 p.m. within the Prado Reservoir bordering Riverside and San Bernardino counties, and at 6 p.m., the fire was still 0% contained, according to the Corona Fire Department and Riverside County Fire Department, which were in unified command.

Nearly 200 personnel from the Corona and Riverside County departments were sent to the location and encountered flames in thick vegetation, burning at a moderate rate away from the airport. Five Cal Fire air tankers and two water-dropping helicopters made runs on the fire until nightfall, slowing its progress.

Several structures were threatened, but crews prevented the flames from causing damage, according to reports from the scene.

The blaze started in the same general area as a small fire that began in the predawn hours and was contained Wednesday morning. There was no word on whether the two are connected, or what might have sparked either blaze.

The airport was shut down because of the firefighting activity, and a temporary flight restriction was imposed, covering a five-mile diameter space around the field and up to 5,000 feet.

About 10 p.m., the Riverside County Fire Department announced evacuation warnings were lifted for residents living on:

— Big Springs Court;

— Rock Ridge Court;

— Cheyenne Road;

— Homestead Road;

— Holster Street;

— Lone Tree Street.

The department warned residents, however, that conditions can change quickly and urged them to monitor social media for any additional updates.

Crews were expected to remain on the fire lines through the night.

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