Blog IICA

Evidences

7 results

75% chance of a historic El Niño

10/09/2026 Go to Evidence

75% is the probability assigned by NOAA that El Niño will reach historic intensity during October-December 2026, exceeding the +2.5 °C threshold in the three-month index used as a reference since 1950.

Henríquez (2026)

Henríquez, P. (2026, 10 de septiembre). El Niño apunta a un récord: NOAA da 75% de chances de un evento histórico este 2026. Meteored Chile. https://www.meteored.cl/noticias/actualidad/el-nino-apunta-a-un-record-noaa-da-75-de-chances-de-un-evento-historico-este.html

Over 90% chance of a very strong El Niño

10/09/2026 Go to Evidence

More than 90% is the probability that El Niño will reach very strong intensity during the Northern Hemisphere autumn and winter of 2026-2027, a period corresponding to spring and summer in Chile.

Henríquez (2026)

Henríquez, P. (2026, 10 de septiembre). El Niño apunta a un récord: NOAA da 75% de chances de un evento histórico este 2026. Meteored Chile. https://www.meteored.cl/noticias/actualidad/el-nino-apunta-a-un-record-noaa-da-75-de-chances-de-un-evento-historico-este.html

Niño 3.4 reached +1.8 °C in August

10/09/2026 Go to Evidence

+1.8 °C was reached by the Niño 3.4 index in August 2026, while Niño 3 reached +2.5 °C and Niño 1+2 reached +3.4 °C. Subsurface temperature anomalies also exceeded +10 °C at depth.

Henríquez (2026)

Henríquez, P. (2026, 10 de septiembre). El Niño apunta a un récord: NOAA da 75% de chances de un evento histórico este 2026. Meteored Chile. https://www.meteored.cl/noticias/actualidad/el-nino-apunta-a-un-record-noaa-da-75-de-chances-de-un-evento-historico-este.html

58%: Very strong El Niño in Niño 3.4

28/08/2026 Go to Evidence

58% or higher is the probability that El Niño will reach very strong magnitude in the Niño 3.4 region between September 2026 and January 2027.

ENFEN (2026)

Comisión Multisectorial encargada del Estudio Nacional del Fenómeno El Niño (ENFEN). (2026, 28 de agosto). Comunicado Oficial ENFEN N.° 15-2026. OPSAa: https://opsaa.iica.int/es/resource-3022-comunicado-oficial-enfen-n-15-2026. Documento original: https://enfen.imarpe.gob.pe/download/comunicado-oficial-enfen-n-15-2026/?wpdmdl=2145

El Niño settled in region 3-4

19/06/2026 Go to Evidence

Region 3-4 of the Pacific Ocean is where Paraguay’s Ministry of Agriculture and Livestock states El Niño has already settled, with direct impact expected on Paraguay.

ABC Color (2026)

ABC Color. (2026, 19 de junio). El Niño en Paraguay: recomendaciones del MAG para proteger la producción agrícola. ABC Color. https://www.abc.com.py/negocios/abc-campo/2026/06/19/el-nino-en-paraguay-recomendaciones-del-mag-para-proteger-la-produccion-agricola/

El Niño exceeds ocean threshold

11/06/2026 Go to Evidence

More than 0.5 °C was the weekly average sea surface temperature anomaly in the equatorial Pacific, the main threshold used to identify El Niño conditions.

AccuWeather (2026)

AccuWeather. (2026, June 5). Latest analysis shows El Niño has arrived, official declaration may be imminent. https://www.yahoo.com/news/weather-news/articles/el-ni-o-under-way-130132633.html

Super El Niño risk

11/06/2026 Go to Evidence

30-40% is AccuWeather’s estimated probability that the event could evolve into a rare “Super El Niño”, with conditions potentially lasting through 2026 and even into 2027.

AccuWeather (2026)

AccuWeather. (2026, June 5). Latest analysis shows El Niño has arrived, official declaration may be imminent. https://www.yahoo.com/news/weather-news/articles/el-ni-o-under-way-130132633.html