Overview
- México’s weather service, in a Monday morning bulletin, kept a broad heatwave in place with highs of 40–45°C and said Cold Front No. 47 will kick up very strong winds and dust in Baja California, Sonora and Chihuahua.
- The Yucatán regional center and state civil protection warned Monday of an extremely hot afternoon with 39–45°C and coastal wind gusts near 60 km/h under clear skies sustained by a strong high-pressure system.
- In Argentina, the national service kept alerts active, with Mar del Plata under an orange alert after overnight gusts reached up to 100 km/h and with a Monday yellow alert for 40–80 mm of persistent rain across several provinces.
- Mexico City’s forecast called for heat near 30–35°C and afternoon showers with lightning and possible hail as a low-pressure trough and moist air feed storms over the center of the country.
- The drivers differ by region, with a mid‑level high causing sinking air and intense heat in Mexico, while a passing cold front and fast upper‑level winds support strong gusts and rain in southern South America.