Issue Date: Friday, September 21st, 2018
Issue Time: 10:35 AM MDT
Summary:
The upper-level trough continued to push eastward through Colorado yesterday. Behind the trough, a very dry air mass filled into the area. It was such an arid air mass that there were no clouds present over the CO/UT border yesterday morning despite ongoing showers and cloud cover over the higher terrains throughout the night. Without much instability able to build over the western area of the eastern plains and only minimal low-level moisture, rain rates were light to moderate. Most totals over the Southeast Plains were in the 0.1 to 0.25 inch range. As you moved further east, a bit more instability was able to form, so storms were more convective in nature. A CoCoRaHS station outside of Springfield recorded 0.75 inches. Radar rainfall estimates over the CO/KS border were up to 1 inch. The higher totals were just over the border with radar estimates up to 1.75 inches. A second set of storms formed over the Northeast Plains associated with a surface low, but again, higher totals remained in Nebraska. Max 1-hr rain rates up to 0.2 were estimated by radar.
To see how much rain fell over your area yesterday, scroll down to 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 fire burn areas (post 2012), which are updated throughout the season to include new burn areas. The home button in the top left corner resets the map to the original zoom.
