SPM 06-29-2021: Rain in Northeast and Southwest Corners of State

Issue Date: Tuesday, June 29, 2021
Issue Time: 9:20 AM MDT

Summary:

Yesterday began with a north-south oriented line of thunderstorms developing in the late morning on the Colorado-Nebraska border east of Pawnee National Grasslands. As the line moved eastward, North Sterling picked up a quick 0.44 inches in a little under 3-hours as the storms passed, as seen in the plot below. Nearby, rainfall totals in the area end up around 0.25-0.50 inches.

By early afternoon, scattered showers also formed along the Front Range Mountains before making their way eastward across the Urban Corridor and Northeast Plains. A flood advisory was issued in Larimer County due to rain over the eastern side of the Cameron Peak burn area, however no flooding was ultimately reported. Rainfall rates in the Urban Corridor were low, also resulting in minimal accumulations.

Overnight into the early morning hours, storms on the Southwest Slope provided a quick burst of rainfall. Durango received 0.45 inches overnight shortly after 3:00 am, seen below. Similar rainfall totals, 0.25-0.50 inches, were scatted across Montezuma, La Plata, and Dolores Counites.

No flooding was reported on Monday. For rainfall estimates in your area, including antecedent conditions, check out the State Precipitation Map below.

Click Here For Map Overview

The map below shows radar-estimated, rainfall gage-adjusted Quantitative Precipitation Estimates (QPE) across Colorado. The map is updated daily during the operational season (May 1 – Sep 30) by 11AM. The following six layers are currently available: 24-hour, 48-hour and 72-hour total precipitation, as well as maximum 1-hour, 2-hour and 6-hour precipitation over the past 24 hour period (to estimate where flash flooding may have occurred). The 24-hour, 48-hour and 72-hour total precipitation contain bias corrections that are not disaggregated into the hourly estimates, so there will likely be some differences. The accumulation ending time is 7AM of the date shown in the bottom right corner. Also shown optionally are vulnerable fire burn areas (post 2012), which are updated throughout the season to include new, vulnerable burn areas. The home button in the top left corner resets the map to the original zoom.