The remnants of Tropical Storm Simon should douse northeastern Colorado over the next two days with cool, wet weather, bringing rain to the plains and snow to the mountains.
The weather will cool as moisture increases and rain should begin falling in Denver after 9 a.m. Thursday, according to the National Weather Service.
The best chance for rain in northeastern Colorado Thursday should be along, and west of, the Interstate 25 corridor, according to the weather service. The chance of rain should increase as the day progresses and afternoon thunderstorms will be possible.
The weather service has posted a flash flood warning from noon Thursday until 9 a.m. Friday for the I-25 corridor from Colorado Springs south to the New Mexico state line.
Woodland Park, Cañon City, Pueblo and Trinidad are included in the flood warning area. Wild fire scar areas will be susceptible to flooding.
In Denver Thursday the high temperature should top out at about 63 degrees and the chance for precipitation is 40 percent.
On Thursday night the chance of precipitation in Denver increases to 80 percent as the low temperature dips to about 44 degrees.
Snow could begin to fall overnight Thursday in the mountains above 10,000-feet in elevation, the weather service reports, with several inches of accumulation on higher mountain peaks and passes.
On Friday at lower elevations the heaviest rains are expected south of the Interstate 70 corridor, the weather service reports.
In Denver Friday mostly cloudy skies will bring a 50 percent chance of rain and the high temperature should top out at 61 degrees.
Friday night in Denver skies will be partly cloudy and the overnight low should be about 61 degrees.
The cool, moist weather disturbance should exit the state overnight Friday and skies over Denver should be mostly sunny on Saturday, with a high temperature of 72 degrees.
Kieran Nicholson: 303-954-1822, knicholson@denverpost.com or
