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Climate Diagnostics Bulletin
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About the Forecast Forum

ENSO Forecast Discussion

ENSO and SST Model Forecasts

Canonical Correlation Model
Nino 3.4 Region: Historical  F1
Nino 3.4 Region: 0-4 Season  F2

NCEP Coupled Model
Eq. Pac. SST & Anomalies  F3
Nino 3 & Nino 3.4 Region  F4

NCEP Markov Model
Eq. Pac. SST & Anomalies  F5
Nino 3.4 Region  F6

LDEO Model
Eq. Pac. SST & Wind Stress Anoms  F7
Nino 3 Region  F8

ENSO-CLIPER Model
All Nino Regions & SOI  F9

IRI Compilation of Forecasts
Nino3.4 Region  F10


Forecast Forum

JUNE 2022

EL NINO /SOUTHERN OSCILLATION (ENSO)

Forecast Forum

The canonical correlation analysis (CCA) forecast of SST in the central Pacific (Barnett et al. 1988, Science, 241, 192‑196; Barnston and Ropelewski 1992, J. Climate, 5, 1316‑1345), is shown in Figs. F1 and F2. This forecast is produced routinely by the Prediction Branch of the Climate Prediction Center. The predictions from the National Centers for Environmental Prediction (NCEP) Coupled Forecast System Model (CFSv2) are presented in Figs. F3 and F4a, F4b.  Predictions from the Markov model (Xue, et al. 2000: J. Climate, 13, 849‑871) are shown in Figs. F5 and F6.   Predictions from the latest version of the LDEO model (Chen et al. 2000: Geophys. Res. Let., 27, 2585‑2587) are shown in Figs. F7 and F8.  Predictions from the ENSO‑CLIPER statistical model (Knaff and Landsea 1997, Wea. Forecasting, 12, 633‑652) are shown in Fig. F9.  Niņo 3.4 predictions are summarized in Fig. F10, provided by the Forecasting and Prediction Research Group of the IRI.

The CPC and the contributors to the Forecast Forum caution potential users of this predictive information that they can expect only modest skill.

 

ENSO Alert System Status: La Niņa Advisory

 

Outlook:

 

La Niņa is favored to continue through 2022 with the odds for La Niņa decreasing into the Northern Hemisphere late summer (60% chance in July-September 2022) before increasing through the Northern Hemisphere fall and early winter 2022 (62-66% chance).

 

Discussion:

 

During June, below-average sea surface temperatures (SSTs) weakened across most of the central and eastern equatorial Pacific Ocean with SSTs returning to near-average in the east-central Pacific (Fig. T18). The monthly Niņo index values ranged from -0.6C to -1.4C (Table T2). Subsurface temperatures anomalies averaged between 180-100W and 0-300m depth were weakly positive in June. Below-average subsurface temperatures persisted near the surface to ~75m depth in the eastern equatorial Pacific Ocean, with above-average temperatures at depth (~100 to 200m) in the western and central Pacific Ocean (Fig. T17). Low-level easterly wind anomalies prevailed in the western and central equatorial Pacific, while upper-level westerly wind anomalies continued over most of the equatorial Pacific (Figs. T20 & T21). Convection remained suppressed over the western and central Pacific and enhanced over Indonesia (Fig. T25). Overall, the coupled ocean-atmosphere system was consistent with La Niņa conditions.

The most recent IRI/CPC plume average for the Niņo-3.4 SST index now forecasts La Niņa to persist into the Northern Hemisphere winter 2022-23 (Figs. F1-F12).  The forecaster consensus also predicts La Niņa to persist during the remainder of 2022, with odds for La Niņa remaining at 60% or greater through early winter.  Lowest odds occur during the next few months with a 60% chance of La Niņa and a 39% chance of ENSO-neutral during July-September 2022.  Subsequently, chances of La Niņa increase slightly during the fall and early winter. In summary, La Niņa is favored to continue through 2022 with the odds for La Niņa decreasing into the Northern Hemisphere late summer (60% chance in July-September 2022) before increasing through the Northern Hemisphere fall and early winter 2022 (62-66% chance; click CPC/IRI consensus forecast for the chances in each 3-month period).

Weekly updates of oceanic and atmospheric conditions are available on the Climate Prediction Center homepage (El Niņo/La Niņa Current Conditions and Expert Discussions).


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