A stream of steady moisture will bring a flooding risk to central South America over the coming days.
Rain and thunderstorms should pummel Uruguay, southeastern Brazil, northern Argentina and parts of Paraguay late this weekend into early next week. Among the threats from this rain will be flash flooding, river flooding and mudslides.
The moisture is expected to come in waves across the region, with the first one impacting Uruguay and southeastern Brazil on Sunday. Instability may also provide for an embedded severe thunderstorm, with hail and the occasional gusty wind possible.
On Sunday night into Monday, the next wave of moisture will bring heavy rains from northern Argentina southeast through to the coast.
A final swath of moisture will impact Uruguay and southeastern Brazil on Tuesday morning, perhaps bringing the heaviest rain of the entire event to interior Uruguay.
By the time things are said and done, some locations could easily get over 2 inches of rainfall, most of which will come in quick bursts.
The best chance for mudslides will occur in the hilly interior of the region, and will likely hold off until Monday and Tuesday, when the toll of continuous rainfall will loosen soil.
High pressure will eventually bring more settled weather across the region during the latter half of the week, however a new storm system will instead take aim at central Argentina.
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