39°35'N / 105°4'W / Altitude 1689 m / 03:02 2026/03/13, America/Denver (UTC-6)
From: 2026/03/12, 20:58
To: 2026/03/13, 15:00
The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 9 PM MDT Saturday. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zones 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248 and 249. * TIMING...For Friday, from 11 AM to 8 PM MDT. For Saturday, from 11 AM to 9 PM MDT Saturday. * WINDS...On Friday, west winds 15 to 25 mph with gusts 25 to 40 mph. On Saturday, west winds 20 to 30 mph with gusts 35 to 50 mph. * RELATIVE HUMIDITY...On Friday, 12 to 17 percent. On Saturday, 10 to 15 percent. * IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County,Jefferson
A Red Flag Warning means that critical fire weather conditions
are either occurring now....or will shortly. A combination of
strong winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
NWS Denver CO
2026/03/12, 20:58
From: 2026/03/13, 02:29
To: 2026/03/13, 12:00
* WHAT...West winds 25 to 35 mph with gusts up to 70 mph. * WHERE...The Southern Front Range Foothills, with the strongest winds along and north of I-70. * WHEN...Until noon MDT today. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles.
JeffersonPeople are urged to secure loose objects that could be blown around
or damaged by the wind.NWS Denver CO2026/03/13, 02:29From: 2026/03/13, 02:29
To: 2026/03/13, 12:00
* WHAT...West winds 30 to 40 mph with gusts up to 80 mph. * WHERE...Rocky Mountain National Park and the Medicine Bow Range, The Mountains of Summit County, the Mosquito Range, the Indian Peaks, and The Northern Front Range Foothills. * WHEN...Until noon MDT today. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. Gusty winds will blow around unsecured objects and a few power outages may result.
JeffersonDrivers of high profile vehicles should consider delaying travel
until winds subside this afternoon.
People are urged to secure loose objects that could be blown around
or damaged by the wind.NWS Denver CO2026/03/13, 02:29
From: 2026/03/12, 23:12
To: 2026/03/13, 15:00
* WHAT...Snow expected. Total snow accumulations between 4 and 9 inches. Winds gusting as high as 65 mph near and above timberline. * WHERE...Rabbit Ears Pass, Rocky Mountain National Park and the Medicine Bow Range, and The Mountains of Summit County, the Mosquito Range, and the Indian Peaks. * WHEN...From 7 PM Saturday to 8 AM MDT Sunday. * IMPACTS...Plan on slippery road conditions. Blowing snow may produce near whiteout conditions at times, particularly for mountain passes over the Continental Divide.
JeffersonSlow down and use caution while traveling. The latest road conditions
for Colorado can be obtained by calling 5 1 1 or by going to
www.cotrip.org.
Roads will be slick resulting in slow and hazardous travel. Allow
extra time to reach your destination.NWS Denver CO2026/03/12, 23:12