STP 08-27-2015: Moist over the West Slope, Dry over the Urban Corridor/Eastern Plains

Issue Date: Thursday, August 27th, 2015
Issue Time: 9:00 AM MDT


A monsoonal disturbance rotated through the high pressure ridge, moving into western Colorado during the afternoon hours. The disturbance produced abundant cloud cover and widespread showers/thunderstorms for locations along and west of the Continental Divide. The abundant cloud cover helped to keep the flash flood threat down due to a relative lack of instability to drive strong thunderstorms and torrential rainfall. Instead, most showers/thunderstorms produced light-to-moderate rainfall, with rates low enough that terrain/streams/etc. could handle it without any issues.

From CoCoRaHS observers, the following locations were the big winners in rainfall totals yesterday:

Mesa County: 0.94 inches
Gunnison County: 0.68 inches
Delta County: 0.54 inches
La Plata: 0.31 inches
Montrose County: 0.25 inches

With fairly sparse observations across the western slope, it is important to check out the STP map below which shows radar-derived measurements.

Storm Total Precip Legend