Highlights - July 2018
temperatures (SSTs) remained near-average across
the central and eastern equatorial Pacific during July 2018 (Fig. T18, Table T2). The latest monthly Niņo indices were +0.3°C for
the Niņo 4 region, +0.3°C for the Niņo 3.4 region, and -0.2°C for the Niņo 1+2 region (Table
T2, Fig. T5). The depth of the oceanic thermocline
(measured by the depth of the 20°C isotherm) was above-average across the central
and eastern equatorial Pacific (Figs. T15, T16), and the
corresponding sub-surface temperatures were 1-4°C above average (Fig. T17).
Also during July, the lower-level
winds were near-average across most of the equatorial Pacific, while the upper-level
westerly winds were above-average over the central and eastern equatorial
Pacific (Table T1,
Figs. T20, T21).
Meanwhile, convection was suppressed across the central equatorial Pacific (Figs. T25, E3). Collectively, these oceanic and
atmospheric anomalies reflect ENSO-neutral conditions.
For the latest status of the ENSO
cycle see the ENSO Diagnostic Discussion at: