El Nino Watch: the impacts around the world this week

The effects of El Nino are being felt globally, ranging from floods in Argentina, deadly fires in Peru and drought in French Guiana, and prompting a UN call for speedy action to face an unprecedented "wrecking ball" this year.

El Nino warms surface temperatures in the central and eastern equatorial Pacific Ocean, bringing worldwide changes in winds, pressure and rainfall patterns. It typically takes place every two to seven years and lasts around nine to 12 months. The naturally occurring weather phenomenon is set to bring higher temperatures to much of the planet this year, with its impact compounding the effects of man-made climate change.

A drone view shows the remnants of houses and Al Mujahiddin mosque in Somang village that have reemerged after the water levels in Karian reservoir, which supplies water for surrounding areas including Jakarta, dropped amid the El Nino-driven prolonged drought, in Lebak, Banten province, Indonesia. REUTERS

"The current El Nino event could be unprecedented in strength: literally off the monitoring charts that we have used for the past four decades," said Celeste Saulo, head of the UN's weather and climate agency, the World Meteorological Organization.

She and UN aid chief Tom Fletcher issued a joint call for "urgent and coordinated anticipatory action" to protect the most vulnerable communities already living on the edge."We cannot stop El Nino, but we can prevent many of its worst human consequences," said Saulo.

Fletcher said El Nino was a "wrecking ball" that would bring havoc to Latin America, eastern and southern Africa, Asia and the Pacific. "The risk is you have tens of millions of people pushed into humanitarian need," he said, warning that 50 million people could face increased hunger.

Flooded houses are pictured after the overflow of the Parana river, following heavy rainfall and the opening of the floodgates at the Yacyreta hydroelectric dam, in Corrientes, Argentina. AFP.

"From one day to the next, a metre of water rushed into my house," Juan Pablo Gomez, a resident of the northeastern Argentinian tourist town of Paso de la Patria told the media.

The flooding linked to El Nino has claimed two lives in recent days and in some parts of the town only the rooftops of houses remain above water. Last week, more than 2,000 people had to leave their homes in the northeast of the country due to heavy rainfall that swelled the Parana, Uruguay, and Iguazu rivers, which separately border Argentina, Brazil, Paraguay, and Uruguay. These rains are linked to El Nino.

This aerial view shows a huge blackened area in the Lake Titicaca National Reserve near the floating islands of the Uros in Puno, Peru. AFP.

"We have a huge mass of hot, dry air over the whole of Peru as a result of El Nino," biologist Daniel Valle, a professor of the Scientific University of the South in Lima, told the media, explaining deadly fires in Peru.

Valle said the flames spread quickly due to high temperatures and dry conditions caused by the weather phenomenon.

At least 12 people have died since June in forest fires that have left hundreds of disaster victims, authorities said last week. Most of the dead are farmers who suffered severe burns and asphyxiation as they tried to control the flames on their own.

Students drive motorbikes through cracked soil near the remnants of houses and Al Mujahidin mosque in Somang village that have reemerged after the water levels in Karian reservoir, which supply water for surrounding areas including Jakarta, dropped amid the El Nino-driven prolonged drought, in Lebak, Banten province, Indonesia. REUTERS

French Guiana has been experiencing a significant rainfall deficit for several months. River traffic has gradually come to a halt due to a sharp drop in the level of the French overseas territory's waterways.

The authorities have set up an air bridge to supply about 40,000 residents of isolated municipalities with no road access. The goal is to ensure the delivery of essential goods at reasonable prices, maintain public education services and keep drinking water production systems functioning properly, including along the coast.

A man walks through flooded waters after heavy rains in north of Guayaquil, Ecuador on Monday. AFP

The International Organization for Migration (IOM) says 874,000 people could be forced to leave their homes in Somalia over the next three months due to flooding.

The rainy season is expected, according to forecasts, to be marked by above-normal precipitation in the country as El Nino strengthens, the IOM warned last week. The agency says it has obtained only about 14.4 percent of the $16.6 million needed to prepare the response to the floods.

Colombia has recorded four consecutive months of record monthly temperatures, with the thermometer there about 1.5°C above normal in July, August and September, according to an analysis of data from the European Copernicus Climate Change Service.

A house damaged by a tornado is pictured in Requinoa, O'Higgins Region, Chile on Monday. AFP

In the face of increasingly frequent extreme events it is difficult to formally attribute a specific event to El Nino.

"El Nino be compared to a highway with weather phenomena like the vehicles on it. El Nino does not let predict the speed of a particular vehicle, nor the lane it's in, and sometimes vehicles suddenly exit or enter the highway," Michelle L'Heureux, a physicist at the US National Weather Service, NOAA, told the media.

"Similarly, the specific characteristics of weather phenomena will be influenced by factors other than El Nino," she said. "However, El Nino can make certain weather events more or less likely over the course of a season. We simply can't attribute an entire weather phenomenon or associated extreme event solely to El Nino, because other factors also play an important role".

Davide Faranda, research director at France's National Centre for Scientific Research (CNRS) said: "It is incorrect to directly attribute a particular event to El Nino because its effects vary by region and season, and also depend on the natural variability of the

Agence France-Presse