“Understanding Wildfire Terminology: A Guide to Containment, Evacuation, and Firefighting Crews”

As the Line, Bridge, and Airport fires continue to rage in Southern California, public safety officials have been using various terms to describe the progress of the wildfires and the efforts being made to contain them. Here is a detailed guide to help understand these terms:

Percent contained: Containment refers to the level of control that firefighters have over a fire, specifically how much of the fire’s edge or perimeter they believe they can prevent from expanding. This can be achieved through natural barriers like rivers or human interventions such as clearing vegetation to deprive the fire of fuel. Even when a fire is 100% contained, firefighters may still be battling to prevent it from getting out of control.

Contingency line: Firefighters often set up contingency lines, which are layers of defense established at a distance from the fire’s perimeter. These lines serve as potential defensive positions in case the fire advances. Crews work towards the fire, clearing vegetation and laying fire retardant to contain the blaze.

Controlled: Once a fire reaches 100% containment, crews work towards declaring it controlled. This means that the fire is essentially out, and patrols are sent out daily to ensure no rekindling occurs.

Evacuation order: A lawful order to leave immediately due to an imminent threat to life. Areas under evacuation orders are closed to the public, and defying the order can result in charges.

Evacuation warning: Indicates a potential threat to life and property, prompting residents to be prepared to evacuate at a moment’s notice.

Shelter in place: Instructs individuals to remain indoors due to risks outdoors. Doors and windows should be shut and locked until further notice.

Different types of firefighting crews may be mentioned in news reports. Hand crews use tools like chainsaws to build containment lines and conduct mop-up work. Hotshot crews are highly trained teams sent to tackle challenging fires. Engine crews use fire engines to pump water or foam onto blazes, while fuel crews work to eliminate vegetation that could fuel a fire.

Understanding these terms can help the public stay informed and prepared during wildfire incidents. Stay tuned for updates on the ongoing wildfires in Southern California.