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El Nino - Southern Oscillation Information Page         








  • We are currently in an ENSO-neutral phase.
  • There is a 55-60% chance of La Niña conditions developing by fall.
  • A La Niña watch is in effect.
Tropical Pacific Sea Surface Temperatures Tropical Pacific Sea Surface Temperature Anomalies
temp pcpn
Tropical Pacific sea surface temperatures (left image) and associated anomalies (right image). Click images to enlarge.  Images courtesy of the Climate Prediction Center.


Quick Facts

  • ENSO impacts to sensible weather are typically most pronounced from late fall through mid spring.