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Super El Niño Keeps Atlantic Hurricane Season Unusually Quiet

Strengthening El Niño suppresses Atlantic storm formation through stronger upper-level wind shear.

Overview

  • The Atlantic has produced only two short-lived named storms by early August, and their combined accumulated cyclone energy (ACE) is far below normal.
  • Forecasters and researchers point to a strengthening El Niño as the main cause because it increases upper-level wind shear that tears apart developing storms.
  • Saharan dust and episodic dry air are adding to the suppression by reducing moisture over the Main Development Region.
  • Near-record warm sea-surface temperatures in the Gulf and along the U.S. East Coast mean localized coastal or Gulf impacts remain possible even with overall basin quiet.
  • Major forecast models show little organized development in the near term and meteorologists are watching Colorado State University’s Aug. 5 outlook and the mid‑August ENSO update for any change in the season’s outlook.