Lower North Fork Fire
The Lower North Fork Fire burned 4,142 acres in Jefferson County, Colorado, in 2012. It was discovered on March 26, 2012, and contained on April 19, 2012. The cause was recorded as debris and open burning.
- Size
- 4,142 acres
- Discovered
- March 26, 2012
- Contained
- April 19, 2012
- Cause
- Human
Map
The burned area boundary MTBS mapped from Landsat imagery, 3,432 acres. Point of origin as reported, 39.436, -105.217.
The record
- Reported final size
- 4,142 acres
- Burned area mapped by MTBS
- 3,432 acres
- Area inside the final perimeter
- 3,220 acres
- Discovered
- March 26, 2012, 2:39 p.m. local time
- Contained
- April 19, 2012, 6:00 p.m. local time
- Cause
- Human, Debris and open burning
- State
- Colorado
- County
- Jefferson County
- Reporting unit
- Pike and San Isabel National Forest
- Agency
- Bureau of Land Management
- Unit
- COJEX
- Incident type
- Wildfire
- Unique fire identifier
- 2012-CORGD-000176
- MTBS fire identifier
- CO3943610521720120326
- MTBS assessment
- Extended
- Fire occurrence record
- FS-1509492
- Perimeter records
- 2 on file for this fire; the largest is shown
- Note on the perimeter
- Origin and initial acres involved not on Federal lands. Incident was under Mutual Aid agreements. 2 acores did burn on FS lands three days after escape.
The three sizes are three measurements: the size the agency reported when the fire was out, the burned area MTBS drew from satellite imagery before and after, and the GIS area inside the final perimeter, unburned islands included. They rarely agree exactly.
Other large fires in Colorado in 201212
| Fire | Acres | Start | Cause |
|---|---|---|---|
| High Park Fire | 87,275 | Jun 9, 2012 | Natural |
| Last Chance Fire | 45,000 | Jun 25, 2012 | |
| Little Sand Fire | 24,931 | May 14, 2012 | Natural |
| Heartstrong Fire | 24,000 | Mar 18, 2012 | Human |
| Waldo Canyon Fire | 18,947 | Jun 23, 2012 | Human |
| Pine Ridge Fire | 13,920 | Jun 27, 2012 | Natural |
| Weber Fire | 10,133 | Jun 22, 2012 | Human |
| Hewlett Fire | 7,702 | ||
| Sunrise Mine Fire | 5,742 | May 25, 2012 | Human |
| Wolf Fire | 5,126 | Aug 3, 2012 | Natural |
| Fern Lake Fire | 3,498 | Oct 9, 2012 | |
| Wetmore Fire | 1,998 | Oct 23, 2012 | Human |
Nearby
Sources
Perimeters from the National Interagency Fire Center’s Interagency Fire Perimeter History, compiled from the Forest Service, BLM, BIA, Fish and Wildlife Service, National Park Service, the Alaska Interagency Fire Center and CAL FIRE. Burned areas and ignition dates from Monitoring Trends in Burn Severity (MTBS), a program of the US Geological Survey and the USDA Forest Service. Fire reports from Short, Karen C. 2022, Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014], 6th Edition, Forest Service Research Data Archive, doi.org/10.2737/RDS-2013-0009.6. Records before 2014 were joined by this site: a fire report to the burned area its MTBS identifier names, a perimeter to the burned area it lies in when the names or the sizes agree.