Overview
- Mexico's national meteorological service and state protection agencies issued active warnings for heavy to very heavy rain, thunderstorms and isolated hail across many states because Tropical Wave No. 13 is combining with low‑pressure channels and upper‑level troughs.
- Authorities in Mexico City set a peak risk window of roughly 17:00–23:00 for strong to heavy late‑afternoon and evening rains with lightning, possible hail and damaging gusts that could cause flash floods and urban flooding.
- The Yucatán Peninsula will see scattered afternoon storms alongside extreme daytime heat with inland highs of 38–42°C, and Nuevo León faces near‑40°C temperatures with strong southerly gusts forecast to reach 50–70 km/h.
- Mexico's tropical systems are expected to stop affecting the country by late Tuesday evening as Tropical Wave No. 13 moves west, but officials warned that rivers, arroyos and low‑lying areas remain at short‑term risk of flooding.
- Separately, Argentina's Servicio Meteorológico Nacional issued yellow alerts for storms, snow, strong winds and extreme cold across 14 provinces and forecast a very cold spell in the Buenos Aires metro area peaking around 2 July, illustrating contrasting regional hazards in the same period.