Updated October 18, 2020 | 9:33 p.m. MDT
The Boulder Office of Emergency Management has released a preliminary list of the structures that were destroyed or damaged in the Calwood Fire. The list includes 23 homes described as a total loss. The process is ongoing and more buildings may be added as the surveys continue.
The weather on Sunday stopped the spread of the Calwood Fire which has burned 8,788 acres seven miles north-northwest of Boulder. Weather stations in the area recorded one or two hundredths of an inch of precipitation during the day while the humidity ranged in the 80s or 90s.
To see all articles on Wildfire Today about the Calwood Fire including the most recent, click here.
Firefighting aircraft were hampered by the weather in the morning but were back in the air in the afternoon.
The weather forecast is similar to the one for the Lefthand Fire — strong winds out of the west Sunday night at 16 mph gusting at 25 to 30 mph with the humidity in the 50s. For Monday expect decreasing west winds of 10 mph gusting to 17 while the RH drops to the low 20s. Tuesday will be about the same with slightly stronger west winds.
Updated October 18, 2020 | 7:16 a.m. MDT
The perimeter of the Calwood Fire in the map above was collected by a U.S. Forest Service fixed wing aircraft at 10:58 p.m. MDT October 17. The preliminary estimated size at that time was 8,788 acres. The red shaded areas represent intense heat.
Boulder County has published a map with evacuation information.
Updated October 17, 2020 | 6:04 p.m. MDT
A fixed wing aircraft determined at 4 p.m. Saturday that the Calwood Fire had burned 6,600 acres.
Updated October 17, 2020 | 5:41 p.m. MDT
Colorado’s Multi-Mission Aircraft collected the data in the map above. The time on Saturday afternoon is not certain. The crew estimates the Calwood Fire had at that time burned about 3,300 acres. Spot fires have reached Highway 36 to the east.
Boulder County has information about evacuations that have been ordered.
The Calwood Fire northwest of Boulder, Colorado has spread to the east, reaching Highway 36 (N. Foothills Highway), or at least spot fires have.
Extremely dangerous #CalwoodFire just north of Boulder, CO directly affecting WUI right now. I have observed multiple large fire vortices and a large, rotating pyrocumulus column. Wow. #COwx pic.twitter.com/BCnUhMIScn
— Daniel Swain (@Weather_West) October 17, 2020
October 17, 2020 | 3:33 p.m. MDT
A new fire in Colorado that was reported at 12:17 p.m. MDT Saturday developed a large smoke plume within the first hour. The Calwood Fire is about 9 miles northwest of Boulder and is spreading quickly pushed by an 11 mph wind out of the north-northwest with gusts up to 30 mph. At 2:30 p.m. MDT it was estimated to be 1,000 acres.
The Boulder County Office of Emergency Management reported at 1:48 p.m. that the town of Jamestown was being evacuated.
At 3:05 p.m. a weather station northwest of Boulder reported 46 degrees, 23 percent relative humidity, and wind out of the southwest or south-southwest at 5 to 8 mph gusting to 22 mph. The wind is expected to decrease Saturday night and the relative humidity will increase substantially, but breezy conditions with wind gusts in the 20s will exist off and on through Tuesday.
A Red Flag Warning is in effect until 6 p.m. local time.
Thanks and a tip of the hat go out to LM.