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Author: Subject: La Nina appears to be dead, rest of 2025 is looking ENSO-neutral, so normalish hurricane season for 2025
mtgoat666
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[*] posted on 4-10-2025 at 06:30 PM
La Nina appears to be dead, rest of 2025 is looking ENSO-neutral, so normalish hurricane season for 2025


Last year we had La Nina and no hurricanes. This year we are back to neutral ENSO, so 2025 hurricanes may be more normal in frequency and distribution. Hopefully a break in the drought is coming

EL NIÑO/SOUTHERN OSCILLATION (ENSO) DIAGNOSTIC DISCUSSION
issued by CLIMATE PREDICTION CENTER/NCEP/NWS 10 April 2025


ENSO Alert System Status: Final La Niña Advisory

Synopsis: ENSO-neutral is favored during the Northern Hemisphere summer, with a greater than 50% chance through August-October 2025.

In March 2025, ENSO-neutral conditions returned, with below-average sea surface temperatures (SSTs) weakening in the central and east-central equatorial Pacific Ocean [Fig. 1]. The westernmost Niño index values were near zero, while positive index values persisted in the easternmost Niño-3 and Niño-1+2 regions [Fig. 2]. Below-average subsurface temperatures weakened [Fig. 3], but negative anomalies continued in the central equatorial Pacific, extending to 250m depth [Fig. 4]. A shallow layer of above-average subsurface temperatures continued in the far eastern equatorial Pacific. Low-level wind anomalies remained easterly over the western and central Pacific, while upper-level wind anomalies were westerly over the central Pacific. Convection was suppressed around the Date Line and was enhanced near Indonesia [Fig. 5]. The traditional and equatorial Southern Oscillation indices were positive. Collectively, the coupled ocean-atmosphere system reflected ENSO-neutral conditions.

The IRI and North American multi-model ensemble indicate ENSO-neutral will continue through the summer [Fig. 6]. The forecast team also favors ENSO-neutral, with chances well over 50% through summer 2025. Because of reduced forecast accuracy in the spring, the uncertainty increases at longer time horizons, with a 43% chance of ENSO-neutral and a 38% chance of La Niña during November 2025 - January 2026 (chances of El Niño are under 20%). In summary, ENSO-neutral is favored during the Northern Hemisphere summer, with a greater than 50% chance through August-October 2025 [Fig. 7].

This discussion is a consolidated effort of the National Oceanic and Atmospheric Administration (NOAA), NOAA's National Weather Service, and their funded institutions. Oceanic and atmospheric conditions are updated weekly on the Climate Prediction Center web site (El Niño/La Niña Current Conditions and Expert Discussions). Additional perspectives and analysis are also available in an ENSO blog. A probabilistic strength forecast is available here. The next ENSO Diagnostics Discussion is scheduled for 8 May 2025.

https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/e...





[Edited on 4-11-2025 by mtgoat666]




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