A severe thunderstorm warning for parts of Arapahoe and Elbert counties expired at 4:30 p.m., but the metro region could see heavy rain and occasional lightning until midnight, according to the National Weather Service in Denver.
Doppler radar indicates heavy rain continues in the area, moving the east.
Xcel Energy’s website indicates dozens of homes in the south metro area have lost powe, but it is not clear that weather is the cause.
Storms have brought ample moisture to Denver this month.
In the high country, a flash flood warning is in effect for southeastern Garfield County and west-central Eagle county until 6:30 p.m.
The National Weather Service reported “very heavy rainfall” of more than 2 inches in the area, capable of producing flash flooding in rivers and streams already running high with snowmelt.
Colorado Highway 82 is closed from Garfield County Road 114 west to Glenwood Springs because of a “major rock-and-mud slide and standing water,” according to an e-mail Garfield County sheriff’s spokeswoman.
Authorities have no estimate on when the slide will be cleared.
The turbulent weather in the Denver area is expected to continue tonight and tomorrow.
The National Weather Service said scattered showers and thunderstorms could continue in the city until midnight, with a 50 percent chance of rain at the official monitoring site and Denver International Airport.
Monday also has a 50 percent chance of showers and thunderstorms, most likely before 1 p.m. Monday has a forecast high of 88 degrees.
There is a 40 percent chance of precipitation Monday night, forecasters said.
Weather records show the city has received 4.21 since June 1. The average measurement for that period is 2.22 inches.
