STP 06-29-2016: Strong/Severe Thunderstorms Rumbled Across Eastern Colorado

Issue Date: Wednesday, June 29th, 2016
Issue Time: 9:00 AM MDT

Summary:

It was an active day across eastern Colorado as scattered thunderstorms rumbled, generally moving from north/northwest to south/southeast. The most intense storm(s) of the day occurred over the Northeast Plains, producing severe winds and large hail, along with flash flooding (more on this in the final paragraph). Much attention surrounded the severe thunderstorm that moved across the Denver metro area during the afternoon, in which hail up to 1.5 inches in diameter was reported. Strong winds blew down trees, while heavy rain generated underpass and intersection ponding/flooding. Additionally, 4 people had to be rescued from high water along Cherry Creek Trail.

Meanwhile, across western Colorado, monsoonal moisture began to creep into the region, setting off isolated-to-scattered showers/thunderstorms. Most activity was garden variety, with lightning and gusty winds being the most notable effects. Locally moderate rainfall attended the strongest storms, relatively speaking.

Severe storm reports are as follows:

Severe Wind Gusts: 7 miles NNW of Alvin (65 mph, Yuma County), 13 miles S of Eckley (60 mph, Yuma County)
1.75 inch hail: 6 miles E of Kirk (Yuma County)
1.50 inch hail: 2 miles NW of Sheridan (Denver County)
1.0 inch hail: Various locations across Washington, Denver, and Yuma counties

Rainfall winners, according to CoCoRaHS observers (reports as of 7:00 AM MDT):

Jefferson County: 1.89 inches
Denver County: 1.58 inches
El Paso County: 1.03 inches
Yuma County: 0.97 inches
Prowers County: 0.77 inches
Kit Carson County: 0.75 inches
Douglas County: 0.74 inches

Flash flooding was reported 6 miles E of Kirk (Yuma County) as 1.54 inches of rain fell in 45 minutes. For a statewide look at 24-hour precipitation totals, please take a look at the Storm Total Precipitation map below.

20160629_STPImage
Storm Total Precip Legend