Extreme weather impacts Mexico, Dominican Republic, and Argentina

extreme weather monsoon El Niño heatwave tropical wave

Multiple regions in the Americas are facing extreme weather conditions. In Mexico, atmospheric instability driven by the Mexican monsoon and tropical wave number 29 is causing heavy rainfall and thunderstorms. Intense precipitation is specifically forecast for Guerrero and Oaxaca, while Jalisco faces high risks of intense rain. Additionally, a heatwave is affecting northern Mexico and the Pacific/Gulf coasts, with temperatures in northeast Baja California expected to reach or exceed 45 degrees Celsius.

In the Dominican Republic, the Instituto Dominicano de Meteorología (INDOMET) has warned of extreme heat in several northwestern and southwestern provinces, with temperatures reaching 38 to 40 degrees Celsius. The heat is attributed to seasonal patterns, El Niño effects, and Saharan dust concentrations.

In Argentina, meteorological models indicate a near 100% probability that El Niño conditions will persist through the September 2026 quarter, potentially intensifying the traditional Santa Rosa storms. Meanwhile, in Neuquén, winter conditions persist with low temperatures near freezing in several localities.

Entities

Argentina · Comisión Nacional del Agua · Coordinación Nacional de Protección Civil · Dominican Republic · Instituto Dominicano de Meteorología · La Plata · Mexico · Servicio Meteorológico Nacional · Villa Carlos Paz · Víctor Atallah

Claims

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

[○ 1 SOURCE] Northeast Baja California is expected to record temperatures equal to or exceeding 45 degrees Celsius. despertarmexico.com
[○ 1 SOURCE] A cold wave will bring widespread frosts to central and southern agricultural regions in Argentina. ruralnet.com.ar
[● 4 SOURCES] Intense rainfall is forecast for Guerrero and Oaxaca in Mexico. acustiknoticias.com · elcirculorojo.com.mx · www.firmas.mx · hojaderutadigital.mx
[● 7 SOURCES] Mexico is experiencing atmospheric instability, including the Mexican monsoon and tropical wave number 29. acustiknoticias.com · elcirculorojo.com.mx · hojaderutadigital.mx · gaceta.mx · solyucatan.mx · +2 more
[● 2 SOURCES] The Dominican Ministry of Public Health has issued warnings regarding dehydration and heatstroke. almomento.net · www.diariolibre.com
[○ 1 SOURCE] El Niño conditions are expected to continue through the July-August-September 2026 quarter. www.cronica.com.ar
[○ 1 SOURCE] Heavy rains in Mexico City caused flooding in Tlalpan and Gustavo A. Madero. www.excelsior.com.mx
[○ 1 SOURCE] There have been 34 deaths attributed to extreme heat in the Mexicali region. kioncentralcoast.com
[○ 1 SOURCE] Neuquén is experiencing cold winter temperatures with lows near 0 to -1 degrees Celsius. www.mejorinformado.com
[● 2 SOURCES] Several provinces in the Dominican Republic are at risk of extreme heat with temperatures between 38 and 40 degrees Celsius. elpaisdominicano.do · precision.com.do