Overview
- The Coordinación Nacional de Protección Civil issued a national alert on Saturday after the Servicio Meteorológico Nacional warned that front 4 will interact with a low‑pressure channel and the subtropical jet to create unstable conditions.
- The SMN forecasts torrential rainfall concentrated in northeast Coahuila, north Nuevo León and northwest Tamaulipas, with very heavy showers expected in parts of Chihuahua and Chiapas.
- Moisture from the Pacific will drive additional heavy showers along the Guerrero coast and produce strong downpours across western, southern Mexico and the Yucatán Peninsula.
- Authorities urged immediate precautions: avoid crossing flooded rivers or streets, slow down when driving, keep drains clear, ventilate homes when using heaters, prepare an emergency kit and report incidents to 911.
- A cold air mass will lower temperatures in northern and northeastern states, increasing risks for hypothermia in vulnerable people and raising the chance of landslides, urban flooding and transport disruptions.