Overview

• SMN forecasts intense rainfall of 75–150 mm today in Oaxaca and Chiapas, with widespread strong storms across dozens of states.
• Authorities expect several days of significant rain in the Valley of Mexico, with showers in CDMX and Edomex projected to begin around 19:00 local time.
• Conagua is monitoring a Pacific low off Jalisco–Colima–Michoacán–Guerrero with a 30% seven‑day chance of cyclonic development that could become “Mario.”
• Extreme heat persists in the northwest, with maximum temperatures of 40–45 °C in Baja California and Sonora despite rainy conditions elsewhere.
• SMN says the rainy season remains active in its late phase and is estimated to end on November 30, as civil protection warns of flood and landslide risks and advises readiness to evacuate if slope failure signs appear.