Overview

• Mexico’s national meteorological service maintains a 72–96 hour forecast for Sept. 15–17 warning of very heavy to intense rainfall of 75–150 mm in defined regions, with thunderstorms, possible hail and urban flooding risks.
• Associated hazards in Mexico include gusts of 40–60 km/h, coastal waves reaching 2.0–3.5 meters on several Pacific shores and cold overnight minima in highlands, down to −5 to 0 °C in mountain areas of Durango.
• For Tuesday, Sept. 16, the Mexican forecast highlights intense rainfall risks in the south of Veracruz, the north and west of Oaxaca, the south of Tabasco and the north and east of Chiapas, with strong winds in the Isthmus of Tehuantepec.
• Argentina’s meteorological service reported a storm developing near Posadas on Monday with strong rain, electrical activity and intense gusts expected to persist into Tuesday.
• A yellow alert is in effect on Tuesday for persistent rain in northeast Chubut with 30–50 mm expected, locally higher and with a possible rain–snow mix at elevation, as authorities urge standard safety measures and readiness.