South America faces severe storms and high-level weather alerts

severe weather storm alerts South America meteorological warnings extreme weather

Severe weather systems are impacting large portions of South America, specifically Argentina, Brazil, Uruguay, and Chile. In Argentina, the Servicio Meteorológico Nacional (SMN) has issued orange alerts for several provinces, including Entre Ríos, Córdoba, Santa Fe, and northwest Buenos Aires, warning of intense rainfall, hail, and wind gusts exceeding 90-100 km/h. The Buenos Aires metropolitan area (AMBA) is also facing significant storms and high winds.

In Brazil, the southern states of Rio Grande do Sul, Santa Catarina, and Paraná are under high-risk alerts. Meteorologists warn of potential red alerts, with heavy rainfall exceeding 100 mm per day, severe thunderstorms, and wind gusts reaching up to 150 km/h. There is also a risk of tornadoes and microbursts in Rio Grande do Sul. In Santa Catarina, the western regions face a very high risk of storms, hail, and flooding.

Additionally, Uruguay is experiencing severe storms due to a cold front, and Chile's Biobío region is preparing for a category 4 atmospheric river that is expected to bring heavy rainfall and intense weather conditions mid-week.

Entities

Argentina · Brazil · INMET · Instituto Nacional de Meteorologia · MetSul · Rio Grande do Sul · Servicio Meteorológico Nacional · Simepar · Uruguay

Claims

What the coverage asserts, and how many sources carry each claim.

[○ 1 SOURCE] Severe storms are expected in Uruguay on Sunday, September 20, due to a cold front and air mass instability. tiempodenoticias.uy
[○ 1 SOURCE] Storm warnings were issued for Paraná, parts of Santa Catarina, and northern Rio Grande do Sul on Sunday, September 20. diariodoestadogo.com.br
[○ 1 SOURCE] A cold front will bring storms and a sharp temperature drop to Marechal Cândido Rondon, Paraná, during the week. aquiagora.net
[● 3 SOURCES] Rainfall in parts of Rio Grande do Sul, Santa Catarina, and Paraná may exceed 100 mm per day. veja.abril.com.br · clicrdc.com.br · ndmais.com.br
[○ 1 SOURCE] Wind gusts in Rio Grande do Sul could reach between 120 and 150 km/h. tiempodenoticias.uy
[● 3 SOURCES] A red alert for storms has been issued for Monday, September 21, covering much of Rio Grande do Sul, parts of Santa Catarina, and western Paraná. veja.abril.com.br · clicrdc.com.br · ndmais.com.br
[● 3 SOURCES] The SMN issued an orange alert for dangerous meteorological phenomena. www.centraldenoticiasmadariaga.com · politicadelsur.com
[○ 1 SOURCE] Weather conditions are expected to improve on Monday with lower precipitation probability. tn.com.ar
[○ 1 SOURCE] Yellow alerts are active in Buenos Aires City, Chaco, Corrientes, Formosa, La Pampa, Misiones, and San Luis. politicadelsur.com
[● 2 SOURCES] Wind gusts could reach 100 km/h in the AMBA region. www.centraldenoticiasmadariaga.com · politicadelsur.com
[● 2 SOURCES] An orange alert covers northwest Buenos Aires province, Córdoba, Entre Ríos, and Santa Fe. politicadelsur.com
[● 2 SOURCES] Expected rainfall accumulation is between 30 and 50 millimeters. www.centraldenoticiasmadariaga.com · politicadelsur.com