A potential “super” El Niño event is being discussed, which could lead to higher global temperatures and more extreme weather conditions. Various climate models are suggesting a robust El Niño starting around June or July and peaking in November, with temperatures in a crucial Pacific region possibly rising up to 2 degrees Celsius above average, with some models foreseeing even higher deviations.
El Niño is part of the broader El Niño-Southern Oscillation (ENSO) system, impacting global weather patterns. Warm temperatures in the specific Niño 3.4 region of the Pacific Ocean trigger El Niño, while cooler temperatures result in La Niña, with a neutral phase also existing.
The U.S. National Oceanic and Atmospheric Administration (NOAA) has issued a monthly ENSO update, indicating an 82% chance of El Niño developing between May and July and a 96% likelihood of it persisting from December to February, with uncertainties regarding its peak strength.
Under normal conditions, trade winds move warm water westward in the Pacific Ocean from South America to Asia. However, during El Niño, this process reverses due to weakened trade winds, which appears to be occurring currently.
Although a strong or potentially ‘super’ El Niño may develop this year, experts suggest that its impacts on Canada this summer are not expected. Nevertheless, the global effects of a powerful El Niño will be significant.
While Canada may not feel the effects this summer, winters could be impacted, as historically seen during El Niño events. Eastern and Central Canada typically experience warmer winters during El Niño periods. The last notable El Niño in 2015-2016 led to Canada’s warmest winter on record, and forecasts suggest a similar or even stronger impact this time.
Climate scientists emphasize that the combination of ongoing global warming and an impending El Niño could result in record-breaking temperatures in 2026 or 2027. The warming of the tropical Pacific Ocean due to El Niño contributes to global temperature increases.
Experts stress that the real concern is climate change, with fossil fuel emissions driving unprecedented weather extremes. The recent warmest winter in the U.S. and widespread heatwaves have been attributed to climate change rather than El Niño. Additionally, the significant increase in wildfires globally underscores the impact of climate change.
While El Niño may lead to a quieter hurricane season in Atlantic Canada, the risk of wildfires could rise in Western Canada due to prolonged drought conditions. Scientists warn of heightened fire risks in Canada and the U.S. linked to climate change and El Niño.