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Wildfires in southwestern France’s Gironde Department and Spain’s Ávila and Madrid provinces in mid-July 2026 became the most disruptive in decades, forcing hundreds of thousands to evacuate and destroying hundreds of homes. Spanish officials reported the Ávila fire burned approximately 77,000 hectares—an area larger than New York City—after merging with neighboring blazes. The fire’s rapid expansion was first observed by NASA satellites near Burgohondo on July 22 and 23, with charred landscapes visible in Landsat 9 imagery by July 29. Infrastructure around two reservoirs, including homes and campgrounds, sustained severe damage as flames spread unchecked.

In southwestern France, one of the largest fires this decade scorched over 42,000 hectares, prompting large-scale evacuations and devastating the village of Le Porge. By late July, fires had burned more than 90,000 hectares across France, exceeding totals from any other season in recent decades, according to the European Forest Fire Information System. Researchers with The State of Wildfires Project linked the severity to unusually wet winter conditions that spurred vegetation growth, followed by prolonged heat waves and drought that dried it out, creating highly flammable conditions.

Strong winds, reaching up to 65 kilometers per hour, served as the final catalyst for the fires’ rapid spread, according to the analysis. On July 25, firefighters in southwestern France reported the formation of a pyrocumulonimbus—a rare fire cloud fueled by intense heat—marking the first documented instance of such a phenomenon in France. Thousands of firefighters and military personnel deployed to combat the blazes, using aircraft for water and retardant drops and ground crews to construct firebreaks with heavy machinery and hand tools.

Firefighters gained control by late July, allowing authorities to begin lifting evacuation orders, though forecasters warned that hot, dry conditions could reignite risks. NASA’s real-time monitoring tools, including FIRMS and Worldview, provide critical data for tracking fire behavior and emerging trends. Government satellite observations remain essential for analyzing global fire patterns and informing response strategies amid worsening climate conditions.