The photographs are terrifying, the figures are dizzying and permit us to think about the unprecedented nature of thefire raging in Gironde. THE flames have already covered 42,000 hectares – 4 occasions the world of Paris – and a few 220,000 individuals have been evacuated since Wednesday. They’re now round fifteen kilometers from the Bordeaux metropolis. Above all, the firefighters are categorical: the situation is far from being under control. Why is this hearth completely different from all those who France has identified?
“Firestorm”
In response to Lieutenant-Colonel Éric Brocardi, spokesperson for the Nationwide Federation of Firefighters, the fireplace generated a phenomenon, unprecedented in France, of “ fire storm” causing the flames to go out of control. “The rise in temperature on the bottom, on the coronary heart of the fireplace, is such that the extreme warmth rises in a column and meets colder air plenty on the prime. The contact creates a “pyrocumulonimbus” referred to as a “fireplace storm” – with none humidity sadly,” he explains.
Consequence: this cloud of smoke generates its personal “climate”. “Lightning flashes kind inside, which assault the embers on the bottom and proceed to gas the fireplace… It produces a boring noise, like one thing rumbling,” continues the spokesperson. Normally, such a fireplace happens in Australia, Canada – just lately in Los Angeles – however that is the primary time in France. Nevertheless, final 12 months, throughout the massive fire in Audecomparable results – however of lesser depth – had been noticed.
Troublesome to regulate
“It’s intense, titanic,” describes battalion chief Florian Lointier. The principle issue for firefighters is the uncontrollable facet of this hearth: this hearth is named “convestive”. In brief: it creates its personal winds which change path on a regular basis, the place fires often advance in a conical method. Thus, the fireplace develops in all instructions and creates a number of heads of fireside.
“We don’t know the way the catastrophe will unfold, the entrance is consistently altering place. We will not combat. We’re like David towards Goliath: that implies that sooner or later, we will discover the weak level and we will hit it. It’ll come both by saving the sky with rain – nevertheless it must rain closely for 3 days – or by discovering a system to convey the fireplace to a spot the place it’s going to die by itself. The ocean for instance,” analyzes Lieutenant-Colonel Éric Brocardi.
New methods
In whole, 2,500 firefighters are mobilized in Gironde, together with a Swiss group, in addition to 1,500 troopers, practically 1,200 cops and gendarmes and 450 volunteers from civil safety associations, in response to figures given this Sunday midday by the Minister of the Inside, Laurent Nuñez. The A400M army transport plane deployed by the federal government to combat fires within the South-West carried out a delaying product this weekend, for the primary time.
Regardless of these means, “the state of affairs on the bottom is extra defensive than offensive,” specifies the fireplace division spokesperson. It is a conflict technique, we hold getting bombed and we have now to take everybody to security. » In response to the authorities, the fireplace may proceed for a number of days.
