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Writer's pictureDr. Hansi Singh

Umi™ vs ECMWF vs NOAA: Performance Update

The Niño 3.4 Index results were released for October, so we have an update on Umi™ performance relative to both ECMWF and NOAA forecasts.


In September 2024, ECMWF's SEAS5 forecasting system flipped from predicting neutral conditions in the tropical Pacific for the rest of the year to predicting a significant La Niña.

At this point, Planette's Umi™ was one of only a handful of models continuing to predict neutral conditions in the tropical Pacific.
ECMWF September 2024 Predicts La Niña Conditions
ECMWF September 2024 Predicts La Niña Conditions (Orange Line)

In October 2024, however, ECMWF's SEAS5 flipped back to neutral conditions, aligning closely with Umi™ forecasts once again.


ECMWF October 2024 Flip-Flops to Predict Neutral Conditions
ECMWF October 2024 Flip-Flops to Predict Neutral Conditions (Orange Line)
Umi™ has shown remarkable consistency in its ENSO predictions, even as other models, like ECMWF's SEAS5, have flip-flopped between Neutral and La Niña conditions.

The NOAA NCEP model has consistently predicted La Niña conditions in its forecasts over the last 5 months, which have never actually materialized. However, we see a lot of news media like NPR latching onto this La Niña news, even though it's unlikely that a La Niña event will materialize this fall or winter.


NOAA NCEP CFSv2 Model for October 2024 Predicts La Niña Conditions
NOAA NCEP CFSv2 Model for October 2024 Predicts La Niña Conditions (Salmon Line)

Future Outlook: We're excited to bring you new ENSO developments throughout the winter and into spring, especially since Umi™ is the only model to break through the notorious spring predictability barrier. Umi™ subscribers will continue to receive monthly updates of our ENSO forecasts to help with adaptation planning and risk mitigation.


We'd like to offer you free access to Umi™ so you can experience the most accurate Niño 3.4 forecast on the planet for yourself. Please register here.

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