Thousands of customers lost power in the Denver metro area as an early-season snowstorm rushed in and snapped branches and power lines on Monday. Just after noon, Xcel Energy's outage map showed more than 31,000 customers were out of power from Boulder to Parker. An Xcel Energy spokesman said nearly 200 company and contract employees are working to restore power across the metro area. Customers are advised not to shake the snow from still leafed-out trees without being certain the snow won't fall on power and telephone lines. Snow is expected to linger into the afternoon before the storm system moves out and ushers in bitter cold temperatures.