Update: Hog Fire in Fresno County - containment reaches 40%

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Updated: 9:02 a.m. April 23

First discovered: 2 hours ago, 6:43 a.m. April 23

Initial location: Trimmer Springs Road & Lakeview, Trimmer, Fresno County, Calif.

Fire unit: Sierra National Forest

Fire type: Wildfire

Fire name: Hog Fire

Hog Fire initially started today at 6:43 a.m. at Trimmer Springs Road & Lakeview, Trimmer in Fresno County, California.

After being active for two hours, it has burned 200 acres. By Thursday morning, the fire crew effectively contained 40% of the wildfire. However, the cause is still being investigated.

Evacuation information from Cal Fire

Evacuation Warnings

Potential threat to life and/or property. Those who require additional time to evacuate, and those with pets and livestock should leave now.

Evacuation Warnings issued for the following zones:

K98

K99

Fire containment

What does it mean for a fire to be 40% contained?

The percentage indicates how much of the fire perimeter has been surrounded by a control line. In this case, it means that 40% of the wildfire is contained from spreading, while 60% is still uncontrolled.

Containment is part of a larger plan for managing a wildfire. It is normally expressed as a percentage and it refers to how much of the fire perimeter has been surrounded/enclosed by a control line that firefighters create. The containment percentage indicates a certain level of control, but it doesn't always correlate to safety level. Also, it's important to note that containment doesn't mean a fire is out.

How is containment measured?

The incident's central command constantly receives progress reports from firefighters on the ground. As the fireline is constructed, inspected or reinforced, mappers record those details to adjust the containment percentage. The percentage tells the public how much of the fire perimeter is believed to not go beyond the control lines.

Source: Cal Fire

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This story was originally published April 23, 2026 at 7:09 AM.