By Sam Collentine, Meteorologist Posted 11 months ago August 10, 2023

NEW: Active Fires Map

active fire map

Track named fire incidents in the US & Canada, fire perimeters in the US & Canada, and satellite-detected hotspots, globally, with our "Active Fires" map overlay.

How to find the Active Fires map overlay

Start by pulling up the "Maps" tab and selecting the "Active Fires" overlay. You can then hover over the incidents, perimeters, and hotspots on your desktop or tap on your mobile device to view the available details.

How often is the data updated?

The map is updated every hour with any available new data.

However, keep in mind that individual fire perimeters and hotspots usually do not update every hour, so while this data is a useful way to visualize the fire's behavior, it should not be used for real-time decision-making since fires can spread much more quickly than the perimeters and hotspots are updated.

Animate fire activity during the past 7 days

You can use the animation slider to see how fire perimeters and hotspots have (or have not) expanded during the previous 7 days. As you drag the slider (or hit the play button), the map will animate in six-hour increments.

About Named Fire Incidents

The named fire incidents are shown using grey circles.

When the map is zoomed out, the grey circles are sized based on the total acreage burned so that large fires can be easily identified.

When hovering (desktop) or tapping (mobile) on the fires, you'll see specific data including:

  • Location
  • Acreage Burned
  • % Contained
  • Discovered Date
  • Fire Cause
  • Fire Behavior
  • Fuel Sources

About Fire Perimeters

The fire perimeters show the outline of the burned area and are provided by local fire incident response teams in the US & British Columbia.

Also, across all of Canada (including British Columbia), we show estimated fire perimeters, which are based on the progression of satellite-detected hotspots and are denoted by a dashed outline on the map.

About Fire Hotspots

Fire "hotspots", shown as colored circles, are detected via satellites and show locations where the satellite estimates that a fire is occurring. Satellites revisit the same area every few hours.

Caution: The hotspots are useful estimates of fire locations, but they do not show real-time information. Also, a fire may be located anywhere in the circle, not necessarily in the middle of the circle.

The color of the fire hotspots is determined by how recently the hotspots were detected, with the color key shown at the bottom of the map.

The size of the hotspot is based on the resolution of the satellite. Higher-resolution satellites produce smaller circles and lower-resolution satellites produce larger circles. Remember that a fire may be located anywhere in the circle.

The Active Fires map overlay is available on and in the OpenSnow app by upgrading to All-Access. The All-Access subscription includes 10-day weather forecasts, high-resolution weather maps, expert local analysis, and much more.

Make sure you're updated to the latest version of the OpenSnow app (App Store / Google Play > OpenSnow > Update) or visit the OpenSnow website (

View → Active Fires Map

Questions? Send an email to [email protected] and we'll respond within 24 hours. You can also visit our Support Center to view frequently asked questions and feature guides.

Sam Collentine

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About The Author

Sam Collentine


Sam Collentine is the Chief Operating Officer of OpenSnow and lives in Basalt, Colorado. Before joining OpenSnow, he studied Atmospheric Science at the University of Colorado, spent time at Channel 7 News in Denver, and at the National Weather Service in Boulder.

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