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NOAA Confirms Weak La Niña as New U.S. Winter Outlook Favors North Wet, South Warm and Dry

Forecasters warn that impacts remain uncertain given the modest signal, with an ENSO update due Nov. 13.

Overview

  • NOAA’s Climate Prediction Center issued Thursday’s Nov–Jan outlook showing above-normal precipitation probabilities from the Pacific Northwest and northern California through the northern Rockies, Great Plains and western Great Lakes.
  • The forecast leans drier across the Southwest, southern Texas and the Southeast, increasing the risk of worsening drought across the southern tier.
  • Temperature probabilities tilt warmer than average for much of the contiguous U.S., while the Upper Midwest and parts of the northern tier have elevated odds of colder conditions.
  • NOAA characterizes the event as weak, with central and eastern Pacific anomalies roughly −0.5°C to −1.0°C, and models favor a return to ENSO-neutral by early spring 2026.
  • Outlook discussions note a weaker polar vortex and a wavier jet stream this winter that could allow more frequent Arctic air intrusions, and they do not include snowfall projections.