STP 06-30-2017: Isolated Thunderstorms with Large Hail

Issue Date: Friday, June 30, 2017
Issue Time: 10:45AM MDT

Summary:

Upslope flow initiated isolated, high-based thunderstorms over the Palmer Divide and Southeast Plains again yesterday afternoon. Despite their high bases, the radar estimates for rainfall were over 3 inches in the storm cores. The severe thunderstorm that formed over rural Otero County had no rain reports, but CoCoRaHS stations in Elbert and Lincoln Counties reported rainfall amounts up to 1.5 inches. Limon Airport had 0.31 inches that fell and reported a wind gust of 40 mph. The main severe threat with these storms yesterday was the hail. There were 23 reports with hail size ranging from 0.75 inches to 2.75 inches in diameter. The astounding 2.75 inch diameter hail was reported by an Emergency Manager just north of Wiley, CO.

Scattered thunderstorms and showers developed over the Northeast Plains and Urban Corridor with the arrival of the upper level trough late last night. The showers have persisted this morning over the Northeast Plains and produced local rainfall amounts of about 0.5-1 inches.

Flooding was not reported on Thursday. Please see the STP map below for a look at 24-hour precipitation totals.

Storm Total Precip Legend