SPM 09-17-2017: Drier and Cool, with a Few Showers/Thunderstorms and High Elevation Snow

Issue Date: Sunday, September 17, 2017
Issue Time: 10:20 AM MDT


Subsident air followed the trough axis swinging across the state yesterday, leading to a much drier day overall. Only a few showers and a couple thunderstorms were able to develop yesterday, with much of the activity in the higher elevations resulting in light rain/snow showers. During the evening and overnight hours, a few weak showers/thunderstorms developed over the Northeast Plains, Palmer Ridge, and Southeast Plains. This activity generally produced between 0.05-0.15 inches of rain with a few locally higher amounts.

Flash flooding was not reported on Friday. For a look at precipitation estimates in your area, please see our 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 accumulation ending time is 6AM of the date shown in the bottom right corner. Also shown optionally are fire burn areas since 2012. The home button in the top left corner resets the map to the original zoom.

Note: We have identified a possible underestimation in QPE over the southwest part of the state. We are working to on this issue, and will provide an update as soon as possible.