The US National Weather Service has reported an increasing likelihood of a historic El Niño event, with an 81% chance that it will develop before the end of this year. This event could rank among the largest since records began in 1950 and has the potential to supercharge extreme weather around the world.
Key Takeaways
The US National Weather Service reports an 81% chance of a very strong El Niño event by year-end, potentially ranking among the largest since 1950. This could supercharge extreme weather globally, with significant impacts expected in South America and North America.
- There is an 81% chance of a historic El Niño event this year
- A 'super El Niño' could drive sea surface temperatures at least 2C higher than average
- Potential impacts include severe droughts, heavy rainfall, and record global heat
- The phenomenon may also influence hurricane activity in the Atlantic
Source Claims Check
1 Difference Found| Claim | Status | Reason | |
|---|---|---|---|
| El Nino Probability | 1 Difference | The Guardian reports an 81% chance of a historic El Niño event this year; UPI and CBS News report a 63% chance between November and January. | ▼ |
| El Nino Impacts | Broad Agreement | El Niño could bring severe droughts, heavy rainfall, and record global heat. |
The phenomenon is characterized by warming sea surface temperatures in the central and eastern tropical Pacific Ocean, which can alter jet streams and precipitation patterns, leading to more severe storms in some regions while causing droughts in others. Climate scientists warn that a 'super El Niño'—one that drives sea surface temperatures at least 2C higher than average—could have enormous power to wreak havoc and could set the stage for record global heat.
The impacts of such an event are expected to be felt globally, with South America facing heavier rainfall in some regions and severe drought in others. In North America, particularly in the Chicago area, El Niño is likely to bring a cooler, stormier summer and a warmer winter with below-average snowfall.
The strengthening El Niño comes amid already record-high global sea surface temperatures, which could exacerbate heat waves and other extreme weather events. The phenomenon may also influence hurricane activity in the Atlantic, although the exact impact remains uncertain due to unusually warm ocean temperatures.
How this summary was created
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