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The Uruguayan Meteorological Institute (Inumet) issued a yellow-level warning for occasionally strong storms and heavy rains affecting much of the country. The warning went into effect at 6:15 a.m. on August 31, 2025, and was updated at 9:15 a.m. that same day. The phenomenon is the result of an atmospheric disturbance associated with a humid and unstable air mass, which generates conditions conducive to the formation of storms in several departments.
🔴 In areas under warning, intense electrical activity, significant rainfall accumulations in short periods, occasional hail, and strong wind gusts may occur. While temporary improvements may occur, the phenomenon will continue to be monitored for changes in its evolution.
🔴 Departments directly affected: Artigas, Paysandú, Río Negro, Salto, Soriano, and Tacuarembó (entire territory). In Colonia, the warning is in effect for Agraciada, Campana, Carmelo, Cerro Carmelo, Florencio Sánchez, and Ombúes de Lavalle. In Durazno, it affects Baygorria; in Flores, Andresito and Ismael Cortinas; and in Rivera, Masoller. Also included are Arerunguá, Piedra Sola, and Tambores in Tacuarembó.
🔴 According to meteorologists, the combination of warm, humid air and atmospheric instability increases the likelihood of severe weather in specific areas of the country. Although the warning remains at yellow level, the possibility of severe storms exceeds 75%, so extreme caution is recommended.
🔴 Inumet urges the public to stay informed through official channels and follow basic safety measures during thunderstorms: avoid outdoor activities, stay away from trees and metal structures, stay away from waterways, and secure loose objects that could be blown away by the wind.
🔴 The phenomenon can cause intense rainfall in short periods, increasing the risk of temporary flooding in both urban and rural areas. Local authorities are on alert for possible complications and urge residents to exercise extreme caution while driving.
🔴 New update – Sunday, August 31 at 10:00 AM:
Phenomenon: Occasionally strong storms
Probability: 50 – 75%
Start: 08/31/2025 at 09:15
Update: 08/31/2025 at 12:00
Description: An atmospheric disturbance linked to a humid and unstable air mass is affecting the country, generating storms that may be locally intense. These will manifest with intense electrical activity, abundant rainfall in short periods, occasional hail, and strong wind gusts. Temporary improvements may occur during the duration of the advisory. Inumet will continue monitoring and will issue further updates if there are changes in the evolution of the system.
🔴 Featured locations under warning:
- Artigas: The entire department
- Paysandú: Casa Blanca, Cerro Chato, Chacras de Paysandú, Chapicuy, Colonia Nuevo Paysandú, Constancia, Esperanza, Gallinal, Guayabos, Lorenzo Geyres, Paysandú, Porvenir, Quebracho, Guaviyú Hot Springs
- Rivera: Northern Lakes, Masoller, Ataques Pass, Tranqueras
- Salto: The entire department
- Tacuarembó: Arerunguá
This information will be expanded or modified as the phenomenon evolves.
🔴 Updated Weather Warning – Monday, September 1, 7:00 a.m.
Heavy rains continue across much of the country , according to the latest report issued by the Uruguayan Meteorological Institute (Inumet). The yellow warning remains in effect, with a greater than 75% probability of intense rainfall in short periods, with estimated accumulated rainfall between 20 and 40 mm .
The conditions are due to an atmospheric disturbance isolated thunderstorms with intense electrical activity , strong wind gusts , and occasional hail are also expected .
Meteorological authorities are constantly monitoring the phenomenon and are not ruling out further updates if changes are observed in its evolution.
📍 Affected areas
The warning applies to the following departments and localities:
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The entire department of: Artigas, Colonia, Durazno, Flores, Montevideo, Paysandú, Río Negro, Salto, San José, Soriano.
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Canelones : Aguas Corrientes, Barra de Carrasco, Barros Blancos, Camino del Andaluz and Route 84, City of the Coast, Nicolich Colony, El Pinar, Olmos Junction, Atlantida Station, Joaquin Suarez, Juanico, La Paz, Las Piedras, Los Cerrillos, Marindia, Neptunia, Pando, Paso Carrasco, Pinamar–Pinepark, Progreso, Route 74, Salinas, San Antonio, San Bautista, San Jacinto, San Ramon, Santa Lucia, Santa Rosa, Sauce, Tala, Toledo, Villa Aeroparque, Villa Crespo and San Andres, Villa Felicidad, Villa San Jose.
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Florida : August 25, May 25, Alejandro Gallinal, Chapel of the Sauce, Cardal, Casupá, Chamizo, Florida, Fray Marcos, Goñi, Independence, La Cruz, Mendoza, Mendoza Chico, Reboledo, San Gabriel, Sarandí Grande.
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Rivera : Yellow, Cerro Pelado, Hills of the Calera, La Puente, Northern Lakes, Las Flores, Masoller, Mines of Corrales, Moirones, Ataques Pass, Tranqueras.
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Tacuarembó : Achar, Ansina, Arerunguá, Iporá Spa, Caraguatá, Chato Hill, Clara, Peralta Cuchilla, Curtina, La Hilera, La Pedrera, Las Toscas, Bonilla Pass, Bulls Pass, Hill Pass, Sola Stone, Upper Town, Mud Town, Road Head, Bonete Corner, San Gregorio de Polanco, Batoví Sauce, Tacuarembó, Drums.
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Long Hill : Arévalo.
☔ Recommendations : The public is urged to stay informed through official channels, avoid unnecessary travel in affected areas, and take precautions against possible flooding.
