10/20/2026
El NiΓ±o conditions bring more rain to California, so what happens when it rains after a wildfire? When rain falls in burn areas, the ground cannot absorb the water, so it flows downhill and may pick up topsoil. Debris flows can average 10-15 feet high, but can be deeper than 35 feet, reach 35 miles per hour and travel miles from where they begin.