In Spokane, Washington, this summer, the Old Trails fire demonstrated that the timing of wildfire detection is as critical as the location of the ignition. A blaze identified within minutes can often be contained before it grows, while a delayed response can turn a small spark into a major disaster.
FireSat Satellites Launch to Spot Small Fires
A new initiative to shorten detection timelines began in July when a SpaceX rocket carried the first three FireSat satellites into orbit. These satellites form the initial segment of a planned network of 50, designed exclusively to detect wildfires while they are still small enough to stop.
FireSat addresses a critical gap in current monitoring. Existing weather and Earth-observing satellites can identify large fires but often lack the resolution or revisit frequency to catch small blazes shortly after ignition. FireSat is engineered to detect fires as small as a beach bonfire and, once fully deployed, will scan every point on Earth approximately every 20 minutes.
The satellites use infrared sensors and artificial intelligence to identify heat signatures that could indicate a new fire. The system compares new images with previous ones, accounting for weather conditions and nearby heat sources, before sending alerts to emergency responders. This approach aims to minimize false alarms while ensuring real fires are reported promptly.
Ground Cameras with AI Enhance Detection
FireSat is designed to complement a growing network of ground-based cameras that use AI to search for smoke and heat. Together, these systems could provide firefighters with their earliest warning yet of a fire's start.
Wildfires have become one of the most destructive natural disasters in the United States, fueled by rising temperatures, prolonged drought, and more frequent hot, dry, and windy weather. According to Climate Central, some parts of the western U.S. now experience about two more months of fire weather each year than in the 1970s.
In the mountains west of Denver, two technicians inspected a pair of wildfire-detection cameras built by Pano AI on a 150-foot cell tower. Arvind Satyam, co-founder of the San Francisco startup, noted, “There are two Pano AI cameras. They’re sitting on top of that cell tower.”
Pano AI has installed over 1,400 cameras across 17 states, continuously scanning landscapes from towers and mountain tops. AI reviews every image, searching for smoke during the day and heat at night. Satyam explained, “The AI algorithms are being run continuously on that imagery to say ‘smoke, not smoke.’ At night-time, we’re looking at heat signatures, so heat versus cold. And then we’re able to zoom in and validate that it is a potential fire start.” If a possible fire is spotted, a human analyst reviews the images before an alert is sent to fire agencies, often within minutes.
Early Detection Saves Lives and Property
Firefighters emphasize that this head start is invaluable. Brendan Finnegan, assistant chief with West Metro fire rescue near Denver, said, “It’s a great tool to validate what’s going on. Having those eyes that can alert us well in advance of potentially a 911 call make it a valuable tool for us.”
California operates one of the largest camera networks through Alert California, with over 1,200 cameras used by Cal Fire. Chief Phillip SeLegue, standing before a wall of live feeds in a Cal Fire control center, said the system detects about half of all wildfires before any 911 call. One recent fire near Fresno was spotted about 20 minutes before the first emergency call, allowing firefighters to respond quickly and prevent growth.
SeLegue noted, “At Cal Fire, one of our missions is to suppress 95% of our fires at 10 acres or less. This system helps us in accomplishing that goal. We trust it enough that when we receive that detection, we’re already starting the process of sending resources to it.”
Complementary Systems Cover Remote Areas
Ground cameras can only see what is in front of them, but satellites can monitor vast stretches of remote forests, mountains, and grasslands where no cameras or people exist. The two systems are designed to work together, offering firefighters a faster and more complete picture of where fires are starting.
Fires detected and extinguished while still small rarely attract attention, which is precisely the goal. SeLegue concluded, “The fires that this system has helped us dispatch resources to are the fires you don’t read about in the papers. The ones you don’t see.”
