Region under flash flood watch
All but the northern-most counties of western Colorado and eastern Utah are under a flash flood watch until late tonight, with forecasters predicting another round of thunderstorms that could produce heavy rainfall and flooding.
The watch is in effect from noon until midnight.
“Deep moisture and instability will combine with slow storm motion to produce thunderstorms with heavy rainfall,” the National Weather Service in Grand Junction posted on its website. “The threat of flash flooding and debris flows will increase through the afternoon and evening hours.”
Forecasters say high rainfall rates could lead to flash flooding anywhere from the Tavaputs and Roan plateaus south to the Arizona and New Mexico state lines, and that the threat of flooding will increase near burn scars from wildfires the last two years. Rain in those burned areas, as well as where heavy rain has fallen the last few days, likely will trigger rock and debris flows, according to the Weather Service.
Heavy rain Thursday night triggered a mudslide that closed Interstate 70 east of Palisade and flooding that closed U.S. Highway 50 north of Delta for several hours.
There’s a 30 percent chance of rain for Grand Junction this afternoon and tonight before the weather warms up and dries out this weekend and early next week.