Sentinel-6 Satellite Detects Warm Kelvin Wave Off South America
Overview
NASA's Sentinel-6 Michael Freilich satellite has captured imagery of a warm Kelvin wave forming off the coast of South America. The satellite, an international mission operated in partnership with ESA and other agencies, detected higher, warmer water moving from the western Pacific Ocean to just off the coasts of Colombia, Ecuador, and Peru.
What Is a Warm Kelvin Wave?
A warm Kelvin wave is a large mass of warmer-than-normal water that moves eastward along the equator. This phenomenon is a well-documented precursor to El Niño conditions, which can significantly alter weather patterns across the globe.
Satellite Observations
Data collected by the Sentinel-6 satellite from March to May 2026 shows the warm water pooling along the eastern Pacific. The animation produced from this data clearly illustrates the progression of this oceanic event.
Significance
Monitoring these ocean temperature anomalies is critical for forecasting El Niño events, which can affect rainfall patterns, agricultural productivity, and even hurricane activity in various regions worldwide.