What to know about the predictions for a potentially record-breaking El Nino

Seasonal climate models suggest a strong El Nino event may develop by mid-2024, potentially becoming one of the strongest on record, according to the World Meteorological Organization (WMO). El Nino involves the warming of equatorial Pacific waters, altering global weather patterns, though spring forecasts remain less precise. WMO’s Wilfran Moufouma Okia noted rising sea-surface temperatures and high confidence in El Nino’s onset, with further intensification expected. The event could trigger extreme weather, including stronger heat waves, droughts, and floods, as Pacific heat redistribution supercharges the climate system. California Institute for Water Resources scientist Daniel Swain warned of unusually large subsurface warm water anomalies, raising the potential for a 'super El Nino.' While outcomes remain uncertain, the risk of record-breaking global warmth is high due to combined El Nino and climate change effects. El Nino typically occurs every two to seven years, lasting nine to 12 months, and suppresses Atlantic hurricanes by diverting heat. The Caribbean may face drier conditions and fewer tropical systems, while the U.S. Southwest could see increased thunderstorms. Globally, impacts include worsened Amazon forest degradation, with 40% already affected by wildfires, logging, and drought. Experts like WFLA-TV’s Jeff Berardelli caution that El Nino’s full effects are unpredictable, but the current conditions—including subsurface heat pulses—suggest a significant event. Record global temperatures are likely by late 2024 or 2025, as El Nino amplifies existing climate change trends. The WMO emphasizes ongoing monitoring to refine forecasts amid growing concerns over extreme weather risks.