SPM 06-14-2018: Scattered Thunderstorms Rumbled Across Eastern Colorado

Issue Date: Thursday, June 14th, 2018
Issue Time: 9:30 AM MDT

Summary:

The battle between dry air and moist air was waged yesterday. West of the Continental Divide, dry air claimed victory as skies remained mostly sunny and hot temperatures ruled the day. Grand Junction set a high temperature record, reaching 101 degrees! A couple high-based showers/thunderstorms tried to develop over the higher terrain of the San Juan Mountains and Southwest Slope, but too much dry air foiled them before they could produce any rainfall. This morning, there are plenty of mid-/upper-level clouds across the High Country, thanks to a subtle increase in moisture during the overnight hours from the southwest.

To the east of the Continental Divide, low-level moisture and daytime heating were sufficient enough to trigger scattered thunderstorms during the afternoon and evening hours. Most produced more wind than rain as dry air in the mid-levels zapped some of their heavy rainfall potential. A couple storms were strong-to-severe, producing hail 0.5 inch-1 inch in diameter.

No flash flooding was reported yesterday. 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 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 6AM 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.

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.