A flash flood emergency triggered immediate evacuations in Beaver County on July 19, 2026, after intense thunderstorms produced massive debris flows across the Cottonwood Burn Scar. The National Weather Service in Salt Lake City issued the warning as heavy rainfall caused rock, mud, and vegetation to surge through the Beaver River system toward Beaver City. The warning expired at 8 p.m. MDT that same evening; what follows is a record of what emergency officials reported during those hours, not an active alert.
Life Threatening Debris Flows
The National Weather Service issued a Flash Flood Warning on July 19, 2026, effective from 3:16 p.m. MDT until 8:00 p.m. MDT that evening. The alert specifically targeted east central Beaver County, warning of an extremely dangerous and life-threatening situation for residents near the Cottonwood Burn Scar.
Imminent Threats to Infrastructure
According to the National Weather Service alert, a large debris flow overtopped the diversion dam in Beaver Canyon and was moving down Highway 153 in lower Beaver Canyon. Law enforcement reports indicated that in addition to the movement within the Beaver River, an additional debris flow was moving through the North Creek area imminently.
Impact on Beaver City
The emergency situation was characterized by pulses of debris flow waves expected to travel down the Beaver River. The National Weather Service warned that these waves would reach the Grove area of Beaver City imminently, creating a flash flood emergency specifically for that location and the South Fork of North Creek.
Evacuation and Safety Orders
Rainfall totals between 0.5 and 1.5 inches had fallen over the majority of basins in the Beaver Canyon area leading up to the warning. This excessive rainfall over the burn scar resulted in active flash flooding, with debris flows consisting of mud, rock, vegetation, and other loose materials moving through the drainage systems.
Hazard Warnings
The National Weather Service issued an order for immediate evacuation for areas in and around the Cottonwood Burn Scar. Residents in Beaver City, specifically within the Grove area, and those in the North Creek area were instructed to move to higher ground immediately.
Travel Restrictions
Officials warned that heavy rainfall would cause extensive and severe flash flooding of creeks, streams, and ditches. The warning noted that severe debris flows could be anticipated across roads, with the potential for roads and driveways to be washed away in various locations.
Emergency Instructions
The National Weather Service advised against all travel unless individuals were fleeing an area subject to flooding or under an evacuation order. Residents were cautioned that river banks and culverts could become unstable and unsafe, and they were instructed to climb to safety if they encountered flood waters.
