Heatwave Threatens to Reignite France’s Mega-Fire Near Bordeaux as Firefighters Battle Dry Winds and Extreme Heat

Heat returns over a dangerous fire zone

A heatwave is threatening to reignite a vast wildfire near Bordeaux, France, where firefighters have been battling a mega-fire described as four times the size of Paris, France.

The blaze has burned through the Landes area west of Bordeaux, France, a region known for pine forests and Atlantic tourist sites. Authorities say the fire has devastated 42,000 hectares, or 103,784 acres, of mainly pine forest after a severe dry spell caused by a series of heatwaves.

The fire has already forced about 220,000 people from their homes, including holidaymakers and local residents.

The forest is dry. The heat is rising again.

Temperatures could reach 42 degrees Celsius

Fire crews kept the major blaze under control overnight, but the next stage of the weather pattern is dangerous. Temperatures in the area are expected to peak at 42 degrees Celsius, or 108 degrees Fahrenheit, on Wednesday, according to Meteo-France.

Another forecast placed temperatures above 40 degrees Celsius, or 104 degrees Fahrenheit.

Dry winds are also expected. Gironde prefect Sophie Brocas said winds from the southwest in the morning and from the west in the afternoon could stoke the flames.

Heat and wind are a difficult combination for firefighters. Dry pine forests burn fast, and any flare-up can move quickly if gusts push flames through the trees.

Overnight calm, but risk remains high

In a Wednesday morning update, Gironde authorities said the situation overnight had been calm and that the blaze had not spread. The fire was not fully extinguished, and earlier updates said it was still not contained a week after it began.

Brocas said firefighters had managed several flare-ups during the night.

Sophie Brocas: “The night was quiet; the fire remains under control this morning, with several flare-ups quickly brought under control during the night."

The calmer night gave crews time to hold positions, but the heatwave has changed the outlook for the coming hours. Rising temperatures and stronger winds are expected to make the fire zone more volatile again.

Thousands ordered out, thousands allowed back

The evacuation pattern shows how unstable the situation remains.

On Tuesday, Gironde authorities ordered 4,000 more people to leave tourist sites along the Atlantic coast, widening what may be France’s largest peacetime evacuation.

At the same time, authorities allowed 60,000 evacuees to return to their homes in three Bordeaux suburbs that had not burned.

Sophie Brocas: “The situation remains complicated. That’s clear. We’re not out of the woods."

The opposing movements told the story of the fire. Some communities were safe enough for residents to return. Other areas near the coast were still too exposed to the next burst of heat and wind.

Cap Ferret threatened as tourists leave by ferry

The fire threatened the Cap Ferret peninsula on the Atlantic coast, an area accessible by only one road. As the risk increased, hundreds of people left on specially chartered ferries.

The evacuation included holidaymakers and local residents.

Along the coast, the danger was not only the flame front itself, but also access. When a peninsula has limited routes out, a fast-moving fire can quickly turn evacuation into a race against smoke, wind and traffic.

Bordeaux outskirts take precautions

Several companies on the outskirts of the historic city of Bordeaux, France, closed operations as a precaution.

The flames came as close as 15 kilometres, or nine miles, from the metropolitan area.

That distance kept the fire outside the city, but close enough to trigger preventive measures. Smoke, shifting winds and sudden flare-ups remained part of the operational risk.

Biscarrosse area sees some relief

South of the main fire zone, several thousand people were allowed back after firefighters put out a minor blaze near Biscarrosse, France.

That return marked one local improvement inside a wider fire emergency. It did not remove the broader danger, because the main blaze remained active and the weather pattern was becoming more hostile again.

The landscape was still dry. The air was still hot.

A fire cloud generated lightning and new fires

At its most violent, the Gironde blaze created a huge black thundercloud, electrified and lit from within.

The phenomenon, known as a pyrocumulonimbus cloud, generated lightning, violent winds and new fires beyond the original front. It was the first such cloud recorded in France.

This kind of fire-driven cloud forms when extreme heat from a blaze forces air rapidly upward. In this case, the fire did not only burn through forest. It helped create its own storm-like environment above the fire zone.

France faces an unprecedented wildfire season

France is going through an unprecedented wildfire season. The burned area has already surpassed the previous record year of 2022.

More than 1,160 square kilometres, or 448 square miles, have burned across France this year, according to the Interior Ministry.

The Landes area is especially vulnerable because it is covered by pine forests, which become highly flammable when dry. The fire has burned a few hundred houses.

After a severe dry spell and repeated heatwaves, the vegetation has become fuel. Once wind reaches the fire line, even a controlled fire can become harder to hold.

Wildfires stretch across France and Spain

Across France and Spain, roughly 330,000 people have been driven from homes and vacation sites by huge wildfires.

Spain is bracing for its fourth heatwave of the summer, with several fires still burning out of control, including the largest in the country’s recorded history.

Spanish authorities have also begun lifting evacuation and stay-at-home orders for thousands of people after firefighters made progress.

The regional picture remains tense: some fire zones are improving, while others remain vulnerable to another pulse of heat, dryness and wind.

Climate conditions are intensifying the fire risk

Europe is the world’s fastest-warming continent, heating at more than twice the global average, according to the European Union’s Copernicus climate service.

Western Europe recorded its hottest June on record. Copernicus said extreme heat and widespread dryness contributed to the spread and intensification of fires in France and Spain.

The current fire danger sits inside that wider pattern: repeated heatwaves, dry forests, hot winds and firefighting crews facing flare-ups even after progress on the ground.