NASA: Fire Season Heats Up in the West

Firebrains | FireFire
NASA, fires, smoke
August 1, 2023

In terms of wildfires, 2023 has been a quiet year so far in the United States. But in early August, 60 fires burned across nine states in the West, fueled by hot and dry conditions. Two of the largest fires were ignited in Oregon and Idaho in late July.

On July 22, a few miles east of Eugene, Oregon, the Bedrock Fire ignited near a campground in the Willamette National Forest. This image, acquired on August 1 by the Operational Land Imager-2 (OLI-2) on Landsat 9, shows smoke streaming south from the front of the fire.

As of August 3, Bedrock Fire had burned 12,200 acres (49 square kilometers) and was growing at a rate of about 1,000 acres (4 square kilometers) per day, according to the Forest Service. The burning led to forest closures in the surrounding area. Smoke from the fires had spread into central Oregon, causing some areas to experience “unhealthy” air conditions.

Burn scars from the Cedar Creek Fire can be seen east of the smoke. The Cedar Creek fire burned 127,000 acres (514 square kilometers) on the western slopes of the Cascade Range from early August 2022 through September 2022.

As of August 3, the Bedrock Fire was Oregon’s second-largest fire of the season. The Flat Fire (not shown), burning in the Rogue River-Siskiyou National Forest in southwest Oregon, had burned 29,000 acres (117 square kilometers) and was 28 percent contained.

NASA, fires, smoke,
July 31st, 2023

In Idaho, six fires were ongoing as of August 3. The largest fire in the state, the Elkhorn Fire, started in the Payette National Forest in north-central Idaho on July 24. Smoke from the fire is visible in this image, acquired on July 31 by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite. The smoke appears to have settled into the deep valleys carved by the Salmon River. On July 30, the wind picked up, and the fire jumped over the Salmon River into the Nez Perce-Clearwater National Forest. The fire also reportedly destroyed several structures at two ranches in its path.

Although summer 2023 has been unusually hot in parts of the United States, with extreme temperatures plaguing the Southwest in July, it has been a quiet year for fires. Since the start of the year, 30,800 wildfires have burned 1.2 million acres (4,800 square kilometers) as of August 3, 2023. This is the fewest acres burned year-to-date in the past 10 years, according to National Interagency Fire Center data. The 10-year average for area burned through August 3 is 3.8 million acres (15,400 square kilometers).

In 2022, NASA launched a new initiative called FireSense, which aims to bring the resources of NASA and its decades of Earth science data to inform decision-makers and guide actions in fire management.

This post first appeared on the NASA Earth Observatory website. NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. Geological Survey and MODIS data from NASA EOSDIS LANCE and GIBS/Worldview. Story by Emily Cassidy.

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