ENSO: Recent Evolution, Current Status and Predictions
ENSO: Recent Evolution, Current Status and Predictions
Update prepared by:
Climate Prediction Center / NCEP 8 January 2024
Outline
Summary Recent Evolution and Current Conditions Oceanic Ni?o Index (ONI) Pacific SST Outlook U.S. Seasonal Precipitation and Temperature Outlooks Summary
Summary
ENSO Alert System Status: El Ni?o Advisory El Ni?o conditions are observed.* Equatorial sea surface temperatures (SSTs) are above average across the central and eastern Pacific Ocean. The tropical Pacific atmospheric anomalies are consistent with El Ni?o. El Ni?o is expected to continue through the Northern Hemisphere winter, with a transition to ENSO-neutral favored during April-June 2024 (60% chance).*
* Note: These statements are updated once a month (2nd Thursday of each month) in association with the ENSO Diagnostics Discussion, which can be found by clicking here.
Recent Evolution of Equatorial Pacific SST Departures (oC)
Since March 2023, positive sea surface temperature (SST) anomalies in the eastern Pacific Ocean gradually expanded and shifted westward.
In October and November 2023, SST anomalies increased in the central and east-central Pacific. Since early December, the positive SST anomalies have persisted.
In the far eastern Pacific, positive SST anomalies have been gradually weakening.
Ni?o Region SST Departures (oC) Recent Evolution
The latest weekly SST departures are:
Ni?o 4 Ni?o 3.4
Ni?o 3 Ni?o 1+2
1.4?C 1.9?C 2.0?C 1.0?C
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