bartoshd / Depositphotos.com
OTTAWA — Meteorologists are increasingly warning a strong El Niño weather pattern could develop later this year as Pacific Ocean temperatures continue rising rapidly in a key monitoring region.
Forecasters track sea surface temperatures in an area of the Pacific known as the Niño 3.4 region to determine whether El Niño or La Niña conditions are developing.
Data collected through the first four months of 2026 shows temperatures in the region have shifted from below seasonal averages to roughly 0.3 degrees above normal and continue climbing.
El Niño occurs when warmer-than-normal ocean temperatures persist in the tropical Pacific for several consecutive months and begin influencing global atmospheric patterns.
Weather models are now showing growing confidence the developing El Niño could become particularly strong by late summer or autumn.
The widely followed European Centre for Medium-Range Weather Forecasts model has projected ocean temperature anomalies in the Niño 3.4 region could exceed two degrees above seasonal averages later this year.
Forecasters caution long-range models are not guarantees, but say multiple model runs are increasingly pointing toward a significant El Niño event.
A strong El Niño can influence weather conditions around the world, often affecting temperature and precipitation patterns, storm tracks and tropical cyclone activity.
In Canada, El Niño conditions can contribute to broad shifts in seasonal weather patterns, including differences in summer heat, rainfall and wildfire risk depending on the region.
Environment Canada’s seasonal outlook currently suggests the Wood Buffalo region has about a 60 per cent chance of experiencing above-seasonal temperatures through the summer months, along with roughly a 40 per cent chance of above-average precipitation.
Meteorologists say Pacific hurricane activity could also increase during stronger El Niño years because of warmer ocean temperatures and more unstable atmospheric conditions in parts of the Pacific basin.
At the same time, El Niño patterns can sometimes suppress hurricane development in the Atlantic Ocean by increasing upper-level wind shear.
Climate agencies are expected to release updated outlooks later this month as forecasters continue monitoring ocean temperatures and atmospheric responses across the Pacific.
Comments