Overview
- The Servicio Meteorológico Nacional issued yellow alerts on Wednesday for parts of Buenos Aires province, Tucumán, Salta, Santiago del Estero and east La Pampa covering Oct. 28–29 with expected short‑period totals of 20–40 mm, frequent lightning, strong gusts and occasional hail.
- Conditions will be spatially uneven: northwestern provinces such as Salta and Jujuy will remain cold, humid and unstable with storm risk through Thursday, according to local meteorologists and provincial notices.
- In the Buenos Aires metropolitan area the day is mostly dry and partly cloudy but temperatures will rise and instability is forecast to increase into Thursday, when showers and storms become more likely.
- Mendoza is forecast to warm sharply this week with daytime highs near 30–31°C while nocturnal instability could bring isolated storms and showers in the evenings, per provincial Contingencias Climáticas and SMN guidance.
- Authorities urge simple precautions such as securing loose objects, avoiding outdoor activity during storms and keeping drains clear because exact storm locations and intensity remain uncertain and conditions should improve or warm for many regions by the weekend.