Heraldo de Madrid - New areas under threat as Chile fires rage and mercury rises

Some 5,600 firefighters, the majority of them volunteers, are actively battling 81 priority blazes countrywide out of 301 still burning, according to authorities.

As international help in the form of personnel and equipment boosted the teams' efforts, officials declared a red alert in the southern region of Los Rios where fires threatened the Corral and Valdivia municipalities.

Officials also fear fires could break out in the metropolitan region around the capital, Santiago.

After a brief reprieve over the weekend, temperatures soared again Tuesday to create conditions, along with the effects of a devastating drought, conducive to fire spread.

The mercury in many places was likely to exceed 37 degrees Celsius (98.6 Fahrenheit) until the end of the week, according to forecasts.

"A very complex climate situation can arise," said deputy interior minister Manuel Monsalve, urging teams to be "prepared for any eventuality."

Nearly 2,000 people have been injured in a week of blazes in the regions of Biobio, La Araucania and Nuble, where a state of emergency is in place.

Flames have consumed more than 280,000 hectares of land, an area larger than the country of Luxembourg, and razed 1,150 homes, according to the SENAPRED emergency response service.

The smoke cloud covering much of Chile as a result, has also unlocked health warnings.

Fifteen people have been arrested on suspicion of setting some of the fires.

- 'Intense' -

Some 2,200 professional firefighters from the CONAF forest corporation and private companies are being backed in the battle by 3,400 volunteers.

In Chile, paid, professional firefighters called "brigadistas" concentrate on forest fires while the rest are all volunteers, including those who fight city blazes.

"What moves us to be firefighters is... being of service. No renumeration can ever replace the gratitude of people," volunteer Jose Antonio Sepulveda told AFP.

With permission from his employer, the 26-year-old engineer traveled on his own time and on his own steam from Concepcion, where he lives, to hard-hit Santa Juana more than 50 kilometers (31 miles) away to help battle fires there.

Colleague Macarena Fernandez, a 31-year-old physical education teacher, also from Concepcion, described the day of Friday in Santa Juana as "intense."

"We did what we humanly could, what was within our means," she said.

"The most difficult is to see the situation of people left without homes, without their family, without their animals and completely destitute."

- Volunteers called back -

Another volunteer firefighter, Danilo Figueroa, an electrician of 50, said he and his colleagues are working 18-hour days.

Some have received calls that their own homes had burnt down while they were out trying to save others.

"Even then... they do not stop," he said.

A week into the emergency, the government said some employers were demanding their staff who volunteer as firefighters return to work.

"We have learnt that in some places... we have lost many firefighters," for this reason, said Interior Minister Carolina Toha.

"For as long as there are fires threatening lives, (the work absence required) is not too long," she insisted.

"The more days (of fire) the more we need the volunteers, the more tired they are and the more in need of help," said Toha.

C.Diez--HdM