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2020 - 2021 California and Southwest Weather Discussion Thread


Thunder98

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Number one reason California has such bad fires

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1. FOREST “FUEL LOADS” ARE HIGH.

The forest floor grows dense with flammable dead branches and brush when it’s not cleared out, either manually or when burned. In many parts of California’s wildlands, these forest "fuels" have not burned or been cleared for decades, due in part to fire suppression policies by state and federal agencies.

"One of the reasons we're observing more fires is because of 100 years of poor Forest Service policy where we didn't allow prescribed fire or wildfires to burn," says Craig Clements, Ph.D., director of the San José State University's Fire Weather Research Laboratory and associate professor of meteorology and climate science.

To understand the history and context of wildfire suppression in the U.S., you have to go back to the Great Fires of 1910. After these enormous wildfires ravaged three million acres across Idaho, Montana and Washington, the then-young U.S. Forest Service made it their singular policy to stop fires whenever possible.

It wasn’t until the 1970s that policy shifted from fire control to fire management, with the recognition that some fire—including prescribed burns—is a necessary part of the wildland ecosystem. But decades of still-unburned forest means today’s wildlands are dense with vegetation that’s ready to spark. Drought conditions have only intensified the impending threat in many parts of the state. (See below for more on this.)

In a 2009 report, Chris Dicus, Ph.D., professor of wildland fire and fuels management at California Polytechnic State University, San Luis Obispo, wrote that before the Gold Rush, there were approximately 50 to 70 trees per acre in California’s forestlands. Today, there are more than 400 trees per acre.

Another contributing factor to the growing forest fuel load is the increasing number of dead or dying trees caused by bark beetle infestations. These insects, along with the drought, are responsible for killing 129 million trees across California since 2010, quite literally adding fuel to the fire.

 

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