El Niño is coming faster than expected and chances are rising that it will be historically strong
El Niño emerges There is a growing possibility that it could become a rare “Super” El Niño in the Pacific Ocean faster than expected and historically strong in the fall or winter.
That’s according to a recently released update from NOAA’s Climate Prediction Center, which says there’s a 2 in 3 chance that El Niño’s peak strength will be strong or very strong.
El Niño is a natural climate cycle that occurs when the tropical Pacific Ocean warms enough to trigger changes in atmospheric wind patterns, creating a ripple effect on weather conditions around the world.
Droughts and heat waves may increase in some regions, fueling wildfire danger and water supply concerns, while other regions may be inundated by floods. El Niño’s far-reaching effects could also disrupt the Atlantic hurricane season. On a larger scale, it is causing global temperatures, which are already rising due to human-caused climate change, to rise even further. Stronger El Niños increase the likelihood of all these effects.
Super El Niño rates increased
El Niño occurs every year lasts two to seven years and nine to 12 months. Its strength is measured by how much above average the water temperature rises in a part of the equatorial Pacific Ocean, usually reaching its peak in the Northern Hemisphere winter.
Weak El Niño conditions develop when the temperature rises 0.5 degrees Celsius above average for an extended period of time. To be considered a very strong or Super El Niño, water temperatures must be 2 degrees above average.
The rectangle shows the Pacific Ocean region where sea surface temperatures were monitored for the occurrence of El Niño. – CNN Weather
The average water temperature is currently just below the 0.5-degree threshold, but is expected to rise above that threshold next month, according to Thursday’s monthly update. Climate Prediction Center. This is a notable change from last month’s update, which supported neutral conditions through June, with neither El Niño nor its colder counterpart, La Niña.
El Niño is likely to strengthen throughout the summer and fall. The chance of it continuing through the winter has also increased to 96 percent; This is an almost constant figure.
The increase in confidence is due to the large pool of warm water that has accumulated deep in the central and eastern equatorial Pacific in recent weeks. This water will eventually rise to the surface, initiate El Niño, and continue to strengthen from there.
But while forecasters are more confident it will occur, the Climate Prediction Center said “there is still significant uncertainty around the peak of El Niño’s strength.”
Still, the odds of a Super El Niño between November and January increased from 1 in 4 last month to about 1 in 3, according to the CPC’s latest power probabilities.
Michelle L’Heureux, a scientist at CPC who leads El Niño and La Niña forecasts, said a stronger El Niño is more likely if changes in the atmosphere continue to sync with changes in the tropical Pacific Ocean this summer, such as seeing winds weaken near the equator while ocean temperatures rise at the same time.
Some typically reliable computer models indicate that this year’s potential Super El Niño could even be the strongest in history. This would be the first Super El Niño since 2015-2016, the strongest in the National Oceanic and Atmospheric Administration’s records dating back to 1950. Others include: 1997-1998, 1982-1983 and 1972-1973.
Even if this El Niño falls below “super” status, it is still likely to be strong. Stronger El Niños generally have a greater impact when it comes to affecting global weather conditions, but the effects do not always play out as expected.
The 2015-2016 Super El Nino lived up to its reputation as a cause severe drought It failed to produce the above-average wet winter known in the Caribbean, but also in Southern California.
A more likely impact is global heat: El Niño is rolling the dice for 2026 or 2027 to be Earth’s hottest year on record. ‘Very likely’ this year will be one of the five warmest years ever recorded NOAA said on Monday:and that doesn’t yet explain El Niño’s warming wild card factor.
What does El Niño mean for weather conditions around the world?
Strong or super, these are the weather conditions that El Niño could affect early next year.
• Hurricane season flip-flop: Stronger El Niños often produce storm killer conditions in the Caribbean and tropical Atlantic, resulting in fewer tropical storms and hurricanes there. The opposite is true in the central and eastern Pacific Ocean, where hurricane season is generally busier. This could mean more tropical threats for Hawaii and the Southwest U.S., depending on where the storms move.
• The largest impacts in the US occur in winter: A warmer-than-average winter is typical from the northern United States to western Canada and Alaska, although harsh cold weather can also visit here from time to time. The southern part of the United States is generally wetter and cooler due to the increased jet stream causing more storms in this region.
• Wet, dry and extreme temperatures: Monsoon rains decrease in India and Southeast Asia during the summer months. The Caribbean also experiences frequent droughts. Warm and dry winters are typical in parts of southern and eastern Asia. Drought conditions may increase in Southeast Africa during the Southern Hemisphere summer months from December to February.
Typical global effects of El Niño in Northern Hemisphere winter and Southern Hemisphere summer. – NOAA
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