El Niño Expected to Strengthen in Warming Pacific
Meteorologists say El Niño has developed in the equatorial Pacific Ocean and could become one of the strongest events recorded since 1950. The U.S. National Oceanic and Atmospheric Administration confirmed the pattern, which occurs when unusually warm waters in the Pacific influence weather systems around the world.
NOAA estimates there is a 63 per cent chance this El Niño will reach a historically strong level by late fall or early winter. Scientists say the event is forming in an ocean already affected by long-term global warming, which may increase the likelihood of extreme weather in some regions.
El Niño’s impacts vary widely. It often reduces Atlantic hurricane activity while increasing storm risks in the Pacific, affecting areas such as Hawaii and other island regions. Parts of western South America can experience heavier rainfall, flooding and warmer temperatures. India may face stronger heat waves, while Australia could see increased risks of drought, wildfire and heat.
Some regions may see benefits. Climate scientists say drought-affected parts of the Middle East could receive needed rainfall. In the United States, El Niño can bring wetter conditions to the South and may help some agricultural areas. The northern Rockies and Southwest could also see summer rains after periods of low snowpack.
In Canada, El Niño’s effects are usually most noticeable in winter, often bringing milder temperatures.
Scientists note that the timing and duration of an El Niño influence its effects. These events typically develop in summer, peak in late fall or early winter, and fade the following spring. Some forecasters say this year’s event may peak earlier than usual, while larger El Niños can last longer.
Researchers continue to study how climate change may affect El Niño intensity. While stronger events are expected in a warming world, scientists say it is too early to determine whether this specific event is directly linked to that trend.