Grand Junction, Colorado – Scattered thunderstorms and heavy rain are set to sweep through western Colorado on Monday, bringing the threat of isolated flash flooding, especially in areas like slot canyons and steep terrain that typically flood quickly.
According to the National Weather Service in Grand Junction, an unusually moist system will move in overnight, with gusty outflow winds, small hail, and frequent lightning possible through Monday afternoon. The greatest flooding risk will occur where morning sunshine boosts storm intensity.
Cities including Grand Junction, Montrose, and Delta should prepare for rapid storm development, particularly during the afternoon hours. Areas along U.S. 50 and near Colorado National Monument may see localized runoff and dangerous driving conditions.
Officials recommend staying alert to forecast updates, avoiding flood-prone recreation areas, and having backup plans for outdoor activities. Lightning and hail could also pose hazards to hikers and campers.
The duration and strength of these storms depend on early-day cloud cover. More sun equals higher flood potential, forecasters say. Warnings remain possible into Monday night as the system tracks eastward.
