Issue Date: Tuesday, September 21st, 2021
Issue Time: 10:15 AM MDT
Summary:
Monday was a much cooler day than we’ve been experiencing lately, with highs only in the 60s and low 70s for the Western Slopes, Grand Valley, Urban Corridor, Southeast Mountains, San Juan Valley and Eastern Plains, and 50s for the Northern, Central and San Juan Mountains. In fact, overnight and early morning lows have been some of the coolest that have been seen since late spring.
In terms of precipitation, the morning kicked off with the end of the trough axis that brought these big changes exiting the Northwest Plains and any lingering light showers dissipating. However, further west early morning showers and even light snow was falling over the Northern and Central mountains. Precipitation totals for the high elevations vary from 0.01-0.40 inches scattered across the region.
By early afternoon, a weak front interacting with the Palmer Divide north of Colorado Springs brought light precipitation to the Urban Corridor and Palmer Ridge. As the afternoon progressed, storms became more widespread over Palmer Ridge and Urban Corridor, and expanding out to the Northeast and Southeast Plains by evening and overnight hours. Precipitation totals were modest and rainfall rates remained light enough to prevent any runoff. Some notable totals from CoCoRaHS observers across the eastern half of the state include 0.37 inches in Denver, though mostly surrounding by 0.05-0.15 inch totals, 0.28 inches in Black Forest, and 0.20 inches in Limon and Brush.
Anyone note the strange substance falling from the sky? A couple bands of light rain out there. Latest radar loop (darker greens and light yellows denote precipitation reaching ground). Snow level ranges from around 8000 feet WY border to 8500 ft I-70 Corridor. #COwx pic.twitter.com/th8E2znNVo
— NWS Boulder (@NWSBoulder) September 21, 2021
No flooding was reported on Monday. For rainfall estimates in your area, check out the State Precipitation Map below.
The Pueblo radar is currently being upgraded and is offline for the next few weeks, so radar-based precipitation estimates for Southeast Colorado are having to rely on further radars in Denver, New Mexico, Texas, and Kansas. This will result in precipitation being underestimated for this region. More information the radar upgrade can be found here.
Click Here For Map Overview
