Wildfire

Wildfires are growing in frequency and intensity, threatening communities, forests, and the economies that depend on them.

Warmer springs, longer summer dry seasons, and drier soils and vegetation have lengthened the fire season in many areas. Factors such as changing land use, large-scale insect infestations, fuel availability, and management practices also play an important role in the frequency and intensity of wildfire.

Drought can create conditions that are ideal for wildfires—dry trees and vegetation provide fuel while low moisture in the soil and air make it easy for fires to spread. In these conditions, a spark from lightning or electrical equipment, human error, or planned fires can quickly get out of control. As Earth’s climate warms and precipitation patterns change, droughts will leave some areas vulnerable to increasingly severe fires. Prescribed fires are one way of promoting resilience of forests and rangelands, which help build forest resilience by selecting areas for treatment, avoiding drought and high winds.

The U.S. Federal government coordinates input from local, Tribal, and state agencies to ensure that all groups have access to a single authoritative source of current information on fires. Federal agencies also promote coordination and sharing of strategies, personnel, and equipment for fire management, including Indigenous fire stewardship practices. Learn more from the  National Interagency Fire Center ». 

As smoke from wildfires adversely affects air quality and exposes people to health risks, federal agencies and others are encouraging the public to take steps that can reduce their health risk related to wildfires through the  Smoke-Ready Toolbox for Wildfires .


Maps

The federal government has extensive data resources that can be used at national, regional, and local levels to monitor wildfire conditions and reveal trends. Here's a sampling of maps and data visualizations related to wildfire.

Current wildfires and air quality

This map shows near real-time fire events. It also shows areas with moderate through hazardous air quality, which may be related to fires.

Click or tap symbols on the map to explore details about current fires. In some cases, zooming in will reveal the fire perimeter.


Esri, USGS | USEPA AirNow | Source: US Department of the Interior, Office of Wildland Fire
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Current Incidents

Personnel Assigned
> 500
50-500
1-50
Unreported Personnel
Prescribed Fire

Today's Air Quality Index

Moderate
Unhealthy for Sensitive Groups
Unhealthy
Very Unhealthy
Hazardous

Future conditions

Climate models project continuing increases in temperature for wildfire-prone areas over the coming decades. Many areas are also projected to see longer periods without precipitation, setting up the conditions for worsening fire weather.

This map plots projections of two variables: consecutive days without precipitation and days over 90 degrees. Bright orange indicates where the greatest extremes of dry and hot conditions occur together. Data are displayed only for areas that currently have moderate to very high wildfire risk, based on vegetation and wildland fuels data.


Esri, USGS | Census Bureau, Council on Environmental Quality (CEQ), Esri, Federal Emergency Management Agency (FEMA), Forest Service, Multi-Resolution Land Characteristics (MRLC) Consortium, National Oceanic and Atmospheric Administration (NOAA), University of California San Diego | Funding for this project provided by USDA Forest Service, Fire and Aviation Management. Funding also provided by USDA Forest Service, Fire Modeling Institute, which is part of the Rocky Mountain Research Station, Fire, Fuel and Smoke Science Program. Work on dataset development was primarily completed by the USDA Forest Service, Fire Modeling Institute. Some salary was provided by FMI through an ORISE agreement under the U.S. Department of Energy (DE-SC0014664). Author information: Melissa R. Jaffe Pyrologix, LLC https://orcid.org/0009-0002-8623-407X Joe H. Scott Pyrologix, LLC https://orcid.org/0009-0008-3246-1190 Michael N. Callahan Pyrologix, LLC https://orcid.org/0009-0009-4937-5405 Gregory K. Dillon USDA Forest Service, Rocky Mountain Research Station https://orcid.org/0009-0006-6304-650X Eva C. Karau USDA Forest Service, Rocky Mountain Research Station https://orcid.org/0009-0009-6776-9387 Mitchell T. Lazarz USDA Forest Service, Rocky Mountain Research Station https://orcid.org/0000-0002-4558-4949
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2050 Dry and Hot Areas

Relationship
RCP 8.5 Mid-century - Mean - Annual maximum number of consecutive dry days (days with total precipitation less than 0.01 inches)
RCP 8.5 Mid-century - Mean - Annual number of days with a maximum temperature greater than 90degF
High - Low
High - High
Low - Low
Low - High

Resources to explore

Here's a selection of federal resources related to wildfire.