McKinney Fire Superbloom: A land where wildflowers dominate
Last summer the McKinney Fire burned on the Klamath River in the rugged Scott Bar Mountains. Apparently lit by downed powerlines in the McKinney Creek watershed on July 29, 2022, the region had been trapped in a ridge of high pressure creating a pronounced heat dome with extremely high temperatures and low relative humidity. In nearby Montague, California high temperatures had not dropped below 96 degrees for two weeks, drying out forest fuels and creating the conditions under which fire could quickly spread through parched vegetation. These conditions were made worse by high winds which reportedly toppled the powerlines on McKinney Creek and contributed to the fire’s initial spread.
That evening with the fire at only 300 acres, dry thunderstorms developed, creating gusty outflow winds which fanned the fire to the north and east. These outflow winds produced extreme fire behavior and generated a massive pyrocumulus smoke plume billowing 50,000’ into the sky. When this massive plume...