Buenos Aires, Argentina

Weather Underground Forecast for Saturday, January 28, 2012.

Areas of active weather will develop in the Caribbean Sea and Latin America on Saturday. An area of low pressure lingers over Panama and pushes abundant moisture onshore from the western Caribbean Sea. This will kick up scattered showers and thunderstorms across Panama, Costa Rica, Nicaragua, and Honduras. Meanwhile to the north, a low pressure system that swept through the Eastern US will push a cold front over the Gulf of Mexico and into the northern Caribbean Sea. The frontal boundary will start to weaken on Saturday, thus, only a few scattered showers are likely from the Bahamas and southern Florida, through western Cuba and the northern tip of the Yucatan Peninsula. In the east, onshore flow from the Gulf of Mexico may push enough moisture into central Mexico, triggering a few rain showers. Mexico City will see a chance of rain with highs in the lower 70s(F)/ lower 20s(C).

In South America, expect scattered thunderstorms to persist across the northwestern countries as a monsoon trough pushes moisture in from the Pacific Ocean. This will produce moderate to heavy thunderstorms from Colombia and Ecuador, through Peru and into western Brazil. To the south, a trough of low pressure lingers off the east coast of Brazil. Flow around this system will support additional storms across Sao Paulo and Rio de Janeiro throughout the day. Further south, a strong and deep low pressure system approaches the southern tip of the continent, triggering heavy precipitation across southern Chile and Argentina. .