Overview
- Mexico’s weather service reports fronts 35 and 36 interacting with a polar trough and polar/subtropical jets, bringing strong northerly gusts and temperature drops in the north.
- Forecasts call for 70–90 km/h winds in Baja California, Sonora, Chihuahua and Durango, with possible snow or sleet on Baja California’s high terrain.
- Despite the fronts, an anticyclonic ridge sustains a heat wave with highs of 40–45°C in parts of Guerrero, Oaxaca and Chiapas and 35–40°C across many other states.
- Mexico City remains under environmental scrutiny after CAMe’s Phase 1 ozone contingency earlier in the week and a yellow heat alert activated for 15 boroughs on Feb. 19.
- Argentina’s SMN maintains yellow and orange alerts across multiple provinces, with Tucumán under orange for 60–100 mm of rain and damaging winds, and recent reports of extreme gusts over 150 km/h and heavy local rainfall in central regions.