SPM 08-25-2017: Isolated Heavy Rainfall Across Eastern Plains

Issue Date: Friday, August 25, 2017
Issue Time: 11AM MDT


With elevated moisture remaining across eastern Colorado on Thursday, scattered showers and thunderstorms were once again seen mainly east of the Continental Divide. Closer to the mountains, storms produced light to moderate rainfall, up to 0.91 inches in Gilpin County and 0.84 inches in Fremont County. Farther east, a few cells were a bit more impressive. In Washington County, a late afternoon slow-moving storm produced over 1.5 inches per hour (from radar estimates) and prompted an Areal Flood Advisory. In addition, hail up to 1 inch was reported. Another smaller storm produced over 1 inch of rainfall in an hour or less in Lincoln County, also prompting an Areal Flood Advisory.

West of the Continental Divide, conditions were generally quieter though light to moderate rainfall, in the form of showers and weak storms, was reported in the climatologically favored southern parts of the San Juan mountains and surrounding valleys. Amount of 0.25 to 0.5 inch range were common in La Plata and Montezuma counties, with slightly higher amounts up to 0.75 inches in the higher elevations.

Flooding was not reported on Thursday. For rainfall estimates in your area, check out our State Precipitation Map below.