SPM 08-06-2018: Garden Variety Showers and Thunderstorms

Issue Date: Monday, August 6th, 2018
Issue Time: 09:50 AM MDT

Summary:

A couple rounds of garden variety of storms moved through the state on Sunday. The day began with some light and moderate showers over the eastern plains. These storms moved eastward and exited the state by early afternoon. At this time, storms begin to fire under the upslope flow regime over the high terrains with the main activity occurring over the Southeast Mountains/Raton Ridge and Palmer Ridge. To the west over Custer County in the Southeast Mountains, there was a storm report for 0.75 inch hail with rainfall rates estimated just over 0.25/hour. Over the adjacent plains, 24-hour totals were just over 0.5 inches.

The more severe storms formed north of Colorado over the Cheyenne Ridge. As they moved east, the dipped a bit south over the far northeast corner of the state. Daytime clearing allowed the atmosphere to recover from the showers earlier in the morning. Logan County had a severe thunderstorm that produced large hail (2.75 inches) and strong winds (70 mph). Rainfall totals were estimated from radar around 0.75 inches. Further south over Cheyenne County, an evening thunderstorm produced 1.5 inches/hour with a CoCoRaHS in the area reporting 0.9 inches. No flooding was reported on Sunday.

To see how much precipitation over your neighborhood, scroll down to the State Precipitation Map below.

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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.