Update on Lower North Fork fire in Colorado

Lower North Fork Fire
Lower North Fork Fire
Lower North Fork Fire. Credit: Jefferson County Sheriff's Office

(We will update this throughout the day on March 28 as developments occur.)

UPDATE at 12:30 p.m. MT, March 28, 2012

The reported size of the fire has been changed from 4,500 to 3,790 acres. This latest size was calculated from an infrared mapping flight that occurred at 10:30 p.m. on March 27.

The Jefferson County Sheriff’s office has reduced the number of damaged structures from 28 to 27. One of the recorded addresses was not accurate.

We have an audio recording of radio traffic from an incident that occurred on March 26 on the fire when four Jefferson County Sheriff officers were entrapped in the fire. They escaped unhurt, but the audio is gripping.

The Denver Post has some fascinating video that was shot by residents driving out of the fire. They said they did not receive a reverse 911 phone call warning.


UPDATE at 9:23 a.m. March 28, 2012

The Jefferson County Sheriff’s Office has updated their map of the fire with data from 8:20 p.m., March 27. The fire perimeter in red. The blue line is the evacuation area as of 2:00 p.m. on March 27. We expect they will give us an updated acreage later.

Map Lower North Fork Fire 2030 3-27-2012
Map Lower North Fork Fire 8:30 p.m., 3-27-2012. Jefferson County Sheriff's Office


UPDATE at 8:45 a.m. March 28, 2012:

The Jefferson County Sheriff’s Office released some updated information at 8:30 a.m. on Wednesday:

Overnight the fire was relatively stable. Fire crews made progress through the night in protecting structures. Today’s strategy is to gain containment around the fire while continuing to protect structures.

Today’s fire behavior is expected to be similar to yesterday but with slightly higher winds. The winds could result in more robust fire activity. The fire will also most likely become more intense as the temperature rises throughout the day. The fire has continued to exhibit a tendency to start spot fires in a wide area.


The Jefferson County Sheriff’s Office will continue to man road blocks around the fire perimeter. At this time we are not allowing anyone back into the evacuated regions.

The Sheriff’s Office said the estimated size is still 4,500 acres and that 28 structures have been damaged.


(Original  post at 7:30 a.m. MT, March 28.)

The Lower North Fork fire that is southwest of Denver and seven miles southeast of Conifer, Colorado, was relatively quiet during the night. The last official acreage that was released by the Jefferson County Sheriff’s Office for the wildfire was 4,500, and they reported that 23 homes have been damaged. An elderly couple was found dead near their home and one resident within the burn area is missing.

The map of the fire shows the fire perimeter in red, as of 11:00 p.m. on March 26. The blue line is the evacuation area as of 2:00 p.m. on March 27. We will provide an updated map as more information is provided.

Map Lower North Fork Fire 732 am 3-28-2012
Map Lower North Fork Fire. Jefferson County Sheriff's Office

The firefighters’ strategy on Wednesday is to switch from point protection to constructing fireline to begin containment of the fire. They had hoped to do that on Tuesday, but the weather and fire behavior did not cooperate, pushing them back into a defensive and structure protection mode. Containment is still listed at zero percent, and 900 homes are still under a mandatory evacuation order. On Wednesday three air tankers (two P2Vs and one single engine air tanker) and four helicopters (including two National Guard Blackhawks) will be working on the fire. More aircraft are on order.

The Rocky Mountain Area Coordination Center reported Wednesday morning that Rich Harvey’s Type 1 Incident Management Team arrived and in-briefed at 8:00 p.m. on Tuesday and will assume command at end of the shift today. The RMACC says 3,790 acres have burned. This reduction in size is probably due to more accurate mapping as a result of the aircraft that Tuesday night used infrared equipment to determine the fire perimeter.

On Tuesday the Colorado State Forest Service released a statement saying a prescribed fire they ignited on Wednesday, March 21, escaped control on Monday, and investigations are underway to determine the cause of the Lower North Fork fire. The Denver Post earlier on Tuesday quoted Jacki Kelley, a Jefferson County Sheriff’s Office spokeswoman, as saying the fire originated from a controlled burn conducted by the Colorado Forest Service.

This first video is from a 6:00 a.m. newscast on March 27.

The video below is from March 26.

9news.com occasionally has live video reports about the fire.

Read Wildfire Today’s March 27 coverage of the Lower North Fork fire. and the March 29 article.

Typos, let us know HERE, and specify which article. Please read the commenting rules before you post a comment.

Author: Bill Gabbert

After working full time in wildland fire for 33 years, he continues to learn, and strives to be a Student of Fire.

3 thoughts on “Update on Lower North Fork fire in Colorado”

  1. Today Thurs 29 March 2012 its reported the aerial tankers that helped get from no containment to 15% yesterday have been reassigned to another state, even though we have perfect weather conditions for those planes to op today and no rain in sight.

    The nearby Hayman fire, also on the northern edge of Pike National Forest like this Lower North Fork fire, back in 2002 sat at about this size for some days, then winds whipped it up, it jumped solid containment lines, and grew quickly to burn 138,000 acres, cause 6 fatalities, destroy 133 homes, and directly costed $40M.

    Not knowing all the factors that went into this reassignment its difficult to judge the decision, though on face value it seems at least questionable, as we have at least three days ahead forecasted to be hot and dry and of late we regularly get swirling winds gusting over 50mph. Further, our local incident commanders all attributed getting 15% containment, after days of no containment, to the constant air tanker flights that were finally able to be made yesterday after many days of winds too strong for air support.

    Its crystal clear we need more operational air tankers, and now only history will judge the prudence, or lack thereof, of whomever made the decision overnight to release these much needed air assets. To me, a local, and hopefully to our Governor, this reassignment seems like a really bad decision that needs to be overturned right away.


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