Tropical Highlights - June 2025

 

During June 2025, sea surface temperatures (SSTs) were near-average across much of the equatorial Pacific (Fig. T18). The latest monthly Nino indices were +0.6C for the Nino 1+2 region and 0.0C for the Nino 3.4 region (Table T2). The depth of the oceanic thermocline (measured by the depth of the 20C isotherm) was slightly below-average across the east-central equatorial Pacific (Figs. T15, T16).

 

Also during June, lower-level wind anomalies were easterly across the east-central and eastern equatorial Pacific, while upper-level wind anomalies were westerly over the eastern equatorial Pacific (Table T1, Figs. T20, T21). Meanwhile, tropical convection was enhanced over Indonesia (Fig. T25). Collectively, these oceanic and atmospheric anomalies were consistent with ENSO-neutral conditions.

 

For the latest status of the ENSO cycle see the ENSO Diagnostic Discussion at: http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/enso_advisory/index.html