El Nino's Impact on Weather Patterns and Hurricane Activity

El Nino is expected to significantly affect global weather patterns, potentially leading to a season without hurricanes in the Atlantic. As of September 23, 2026, only six tropical storms had formed in the North Atlantic, with none intensifying into hurricanes, marking a first since satellite tracking began in 1966, according to the National Oceanic and Atmospheric Administration (NOAA). Matthew Rosencrans, lead hurricane season forecaster at NOAA's Climate Prediction Center, stated, "In the satellite era, we have never had a year without a hurricane. This would be a first." This unusual calm is attributed to the current El Nino-Southern Oscillation (ENSO), which is characterized by shifting winds and sea surface temperatures in the Pacific Ocean. Meteorologists have indicated that this year's El Nino could be one of the strongest on record. NOAA reported that the accumulated cyclone energy for this year's tropical storms is at a record low for this time of year, which typically peaks on September 10. None of the storms recorded have reached the wind speed necessary to be classified as a Category 1 hurricane. NOAA's data indicates that El Nino is strengthening, with sea surface temperatures in the Pacific rising more than 3 degrees Celsius (5.4 degrees Fahrenheit), leading to expectations of a below-normal hurricane season. The typical hurricane season in the Atlantic runs from June 1 to November 30, although hurricanes can form outside this window. Meteorologists caution that the current calm does not eliminate the possibility of a major hurricane forming later in the season. The El Nino phenomenon occurs every two to seven years and can last up to a year, weakening trade winds and altering the jet stream, which disrupts storm formation in the Atlantic. NOAA noted that hurricanes that do form during an El Nino year typically develop along the US East Coast and near the Gulf of Mexico, limiting their time to strengthen. Rosencrans explained that high wind shear during El Nino hinders storm formation deep in the tropics. In contrast, the eastern and central Pacific experiences less vertical wind shear, which, combined with warmer waters, can lead to an increase in tropical cyclones in that region. This year, several major hurricanes have already formed in the Pacific, including Polo. Rosencrans noted that during El Nino, storms in the Pacific tend to track northward, affecting areas such as Guam and Japan. El Nino also impacts monsoon winds over the Indian subcontinent, often leading to severe droughts and a less active tropical cyclone season in the Indian Ocean. Fontan from the World Meteorological Organization explained that the relationship between ENSO and tropical cyclone activity is complex, with extremes in either direction leading to below-normal activity. While El Nino is a natural phenomenon, its effects may be amplified by climate change. Fontan warned that the combination of El Nino and climate change could lead to unprecedented weather extremes, including extreme heat and heavy rainfall. Forecasters have predicted that these combined effects could result in significant health impacts, particularly in vulnerable regions. Celeste Saulo, head of WMO, emphasized the urgency of addressing the expected worsening impacts of El Nino as it intensifies.