Denver, CO – Severe thunderstorms are set to sweep across Colorado, Nebraska, and Wyoming Sunday afternoon, bringing the threat of damaging winds, large hail, and dangerous lightning until 8 p.m. MDT. Counties including Adams, Cheyenne (CO and NE), Weld, Kimball, and Scotts Bluff are under immediate threat, with travel and outdoor plans highly discouraged.
According to the National Weather Service Storm Prediction Center, Severe Thunderstorm Watch 489 is now in effect for Adams, Arapahoe, and El Paso counties in Colorado, along with Banner, Kimball, and Scotts Bluff in Nebraska, and Laramie County, Wyoming. Officials warn storms could rapidly intensify, especially along I-76, I-80, and US-385 corridors, making travel hazardous.
Residents from Denver to Greeley, Sterling, and Cheyenne should prepare for sudden gusts over 60 mph, potential downed power lines, and large hail up to an inch in diameter. Outdoor events in Morgan, Platte, and Phillips counties are at risk of abrupt cancellations due to lightning and heavy rainfall.
Anyone in the watch area should stay indoors, charge mobile devices, and avoid driving if possible until storms subside. Secure loose outdoor items and monitor local alerts for rapidly changing conditions.
Thunderstorm warnings may be issued with little notice, and the watch remains in effect through 8 p.m. MDT. More updates could follow as the situation develops.