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WILDFIRE

Evacuation orders lifted as Spain wildfire crews gain edge

Crews battling to subdue a wildfire that has ravaged vast swathes of land in eastern Spain gained more ground on Sunday, allowing officials to lift all remaining evacuation orders.

Published: 21 August 2022 17:05 CEST

BRIF putting out a forest fire in spain

Members of the Forest Fires Reinforcement Brigades (BRIF) work to put out a wildfire in the Moncayo Natural Park, one of the almost 400 blazes that have broken out in Spain this year. ANDER GILLENEA / AFP

The blaze, which started on Monday near Bejis in the eastern Valencia region, has destroyed over 20,000 hectares (50,000 acres) of land and spurred the evacuation of around 2,200 people.

“It is in the process of being stabilised. We hope that this afternoon or tomorrow it will be stabilised,” Valencia regional president Ximo Puig told reporters.

“Now is the time to return to normality, with caution. Everyone from any municipality or district can now return home,” he added.

Local officials had already on Saturday lifted evacuation orders in two villages, Bejis and Toras, because the threat from the flames had diminished.

Firefighters said reduced winds, cooler overnight temperatures and higher humidity levels had allowed them to start to contain the blaze.

But they cautioned that temperatures were still high, with the mercury expected to rise to 35 degrees Celsius (95 Fahrenheit), which when combined with hot, dry winds could still rekindle the wildfire.

About 20 aircraft were deployed to battle the blaze on Sunday, compared to 42 the day before, Puig said.

Another major wildfire which broke out last Saturday some 200 kilometres (125 miles) further south in the Vall de Ebo was brought under control on Sunday, he added.

It has ravaged some 12,000 hectares of woods, bushes and farmland.

The blazes are among the almost 400 to have broken out in Spain so far this year amid a series of punishing heatwaves and long dry spells that have devastated more than 283,000 hectares of land, more than three times the total area destroyed in 2021.

READ ALSO: Heavy rainfall helps contain huge wildfires in Spain’s Valencia region

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Does Spain use cloud seeding?

The internet was awash with images of dramatic flooding in the UAE two weeks ago, in which parts of the country saw more rainfall in a single day than it usually does in an entire year on average.

The UEA government stated that it was the most rainfall the country had seen in 75 years and an incredible 10 inches of rain fell in the city of Al Ain.

Predictably, the freak weather event sparked fierce internet debate about the causes and consequences among climate change activists and climate change sceptics. The cause, in particular, struck a chord with certain subsections of the internet and many were asking the same question: did ‘cloud seeding’ cause this biblical downpour?

But what exactly is cloud seeding? Does Spain use it? And with the country’s ongoing drought conditions, should it be using it?

What is cloud seeding?

According to the Desert Research Institute: “Cloud seeding is a weather modification technique that improves a cloud’s ability to produce rain or snow by introducing tiny ice nuclei into certain types of subfreezing clouds. These nuclei provide a base for snowflakes to form. After cloud seeding takes place, the newly formed snowflakes quickly grow and fall from the clouds back to the surface of the Earth, increasing snowpack and streamflow.”

Cloud seeing is used by countries around the world, not only in the Middle East but in China and the U.S, usually in areas suffering drought concerns. The process can be done from the ground, with generators, or from above with planes.

Does Spain use cloud seeding?

Sort of, but on a far smaller scale and not in the same way other countries do. In places like China and the U.S, where large swathes of the country are at risk of drought, cloud seeding is used to help replenish rivers and reservoirs and implemented on an industrial scale.

In Spain, however, the technique has been for a much more specific (and small scale) reason: to avoid hailstorms that can destroy crops.

This has mostly been used in the regions of Madrid and Aragón historically.

But cloud seeding isn’t something new and innovative, despite how futuristic it might seem. In fact, Spain has a pretty long history when it comes to weather manipulation techniques. Between 1979 and 1981, the first attempts to stimulate rainfall took place in Spain, coordinated by the World Meteorological Organisation.

“In 1979, in Valladolid, different techniques were developed to observe the local clouds but they did not meet any possible conditions for cloud seeding experiments. The project came to a standstill,” José Luis Sánchez, professor of Applied Physics at the University of León, told La Vanguardia.

This sort of cloud seeding, as used abroad, doesn’t really happen in Spain anymore. Rather, when it’s used it’s done to protect crops on a local level. Spain’s Ministry for Ecological Transition and the Demographic Challenge are responsible for authorising cloud seeding, but there are only a handful of current authorisations to combat hail, such as the one granted to the Madrid’s Agricultural Chamber combat hail in the south-east of the region.

As of 2024, it is believed that no regions have requested cloud seeding (whether by generator or plane) to ‘produce’ more rain.

So, cloud seeding isn’t currently used like it is in countries such as the U.S., China, and the UAE. But should it, and could it solve the drought issue in Spain?

An aircraft technician inspects a plane’s wing mounted with burn-in silver iodide (dry ice) flare racks. (Photo by Indranil MUKHERJEE / AFP)

Spain’s drought conditions

Spain has been suffering drought conditions for several years now. Last year the government announced a multi-billion dollar package to combat the drought conditions, and several regions of Spain have brought in water restrictions to try and maintain dwindling reservoir reserves.

READ ALSO:

At times in Spain in recent years it has felt as though another temperature or minimum rainfall record is broken every other day. The drought conditions are particularly bad in the southern region of Andalusia and Catalonia, where, despite heavy rain over Easter, reservoirs in the region are at just 18 percent capacity, the lowest level in the country.

So, could cloud seeding be used in Spain to help alleviate some of the drought conditions? Yes and no. Seeding is not the only answer to drought, but could theoretically be used as one option among many.

“It’s just another tool in the box,” Mikel Eytel, a water resources specialist with the Colorado River District, told Yale Environment 360 magazine: “It’s not the panacea that some people think it is.”

This is essentially because cloud seeding does not actually produce more rain, rather it stimulates water vapour already present in clouds to condense and fall faster. For there to be a significant amount of rainfall, the air needs significant levels of moisture.

That is to say, using cloud seeing to try and stimulate more rain may help Spain’s drought conditions in a small way, but the difference would be marginal.

“It’s not as simple and may not be as promising as people would like,” respected cloud physicist Professor William R. Cotton, wrote in The Conversation.

“Experiments that produce snow or rain require the right type of clouds with sufficient moisture and the right temperature and wind conditions. The percentage increases are small and it is difficult to know when the snow or rain fell naturally and when it was triggered by seeding.”

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