Issue Date: Friday, July 2, 2021
\nIssue Time: 10:45 AM MDT<\/p>\n
Yesterday kicked off with an early morning storm in the Grand Valley – a trained spotter reported a quick 0.24 inches of heavy rain in Grand Junction before dissipating around 8:00 am. There was also an early morning line of storms associated with a low-pressure system in the Southeast Plains, which moved eastward into Kansas through the morning. In the late morning and early afternoon things really started to kick off in the Northern and Front Range Mountains, Urban Corridor, Southeast Mountains, and Southeast Plains. By 11:00 am, lines of thunderstorms, some severe, were building and producing heavy rainfall. Fueled by additional monsoonal moisture, storms strengthened throughout the day until they finally dissipated from north to south overnight.<\/p>\n
The big “winner” of the day in terms of total storm precipitation was Greeley, which recorded between 2-3+ inches across town in just a few hours. A CoCoRaHS<\/span> observer in West Greeley reported a total of 3.40 inches, and a nearby Weather Underground PWS recorded 3.43 inches in just under 3-hours. To put that into perspective, 3.43 inches in 3-hours relates to a 90-year rainfall event, or only a 1.1% chance of occurring in any given year!<\/strong><\/p>\n Flash flood<\/span> warnings were issued for the heavy rain, and several reports were made across Greeley of significant road flooding. The following tweet from Marc Sallinger shows some of the flooding and damage reported.<\/p>\n Greeley has some pretty major flooding right in the middle of town after a storm dropped 3-4in of rain in an hour. Streets are closed, sand bags are being put up, and people are trying to get the water out of buildings #9News<\/a> pic.twitter.com\/WLq3fzZHN4<\/a><\/p>\n — Marc Sallinger (@MarcSallinger) July 1, 2021<\/a><\/p><\/blockquote>\n\n