The blaze is already the largest wildfire in the county's history, surpassing 2010's Fourmile Fire, which burned almost 10 square miles and destroyed 165 homes and four other structures in the mountains west of Boulder.
As per the National Interagency Fire Center, the wildfires in Colorado are few of the 60 severe blazes in the western states.
Saturday's report from the National Interactive Coordination Center, "threatened many communities".
The update says that firemen are likely to take advantage of this change in weather to utilize fire suspension methods.
"It just exploded", Wagner said of the late-season wildfire. It opened on October 25 a year ago, but a start date for 2020 has not yet been set.
The National Weather Service predicted a temperature rise near 70 on Saturday in Loveland. The company warned of "dangerous weather" caused by winds of up to 50 miles per hour.
An explosive new wildfire northwest of Boulder burned more than 7,000 acres in a matter of hours Saturday, forcing the evacuation of Jamestown and wide swaths of the Boulder County foothills while sending skyward a tower of billowing smoke that could be seen across the metro area.
She said the high winds kept the water-dropping planes and the dampers from operating on Saturday. In addition to local, state and federal firefighters, the U.S. Navy and crews from Mexico have also been sent to mitigate some of them.