From Fox News:
Days of heavy rain in Colorado caused flash flooding that left at least three people dead and prompted authorities to call on thousands more people in the city of Boulder to evacuate as a nearby creek began rising to dangerous levels.
After a rainy week, up to 8 more inches fell in an area spanning from the Wyoming border south to the foothills west of Denver. Flooding extended all along the Front Range mountains and into some cities, including Colorado Springs, Denver, Fort Collins, Greeley, Aurora and Boulder.
Boulder County appeared to be hardest hit. Sheriff Joe Pelle said the town of Lyons was completely cut off because of flooded roads, and residents were huddling together on higher ground. Although everyone was believed to be safe, the deluge was expected to continue into Friday.
