Abstract
Hot days observed during February 2024, reaching 30oC in Mexico City, have made its inhabitants forget that it was the winter season, characterized by dry and cool weather. While such extreme events are often associated with climate change, the current state of the coupled ocean-atmosphere system indicates the last months of an El Niño state, after an expectation of this to be within the top 5 El Niño – Southern Oscillation (ENSO) events (https://cutt.ly/rw1h4T26). The effects of ENSO on the seasonal climate have been widely studied (Philander 1990), and their impacts on Mexico have also been documented (Magana, 2004). Recent seasonal forecasts suggest a progression towards a neutral state for the April-June 2024 season. And further projections indicate a 55% of chance of La Niña developing during the rainy season of 2024. This suggests an end to dry and warm conditions and the possibility of increased rainfall. (Magaña et al. 2003). However, with an ongoing drought over most of the Mexican region, and a water crisis affecting central Mexico, it seems that the seasonal forecasts based on ENSO projections set up the stage for a critical situation for most of the country during the Spring season.
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