South America

Weather Underground Forecast for Wednesday, November 04, 2009.

Tropical storm activity is not expected over the tropical Atlantic Ocean or Caribbean Sea on Wednesday, but active weather will persist. A front produced by a low pressure system that swept through the Eastern US will extend over the Gulf of Mexico. This system will trigger moderate to heavy showers over the Gulf and is expected to stretch from Florida and the Bahamas, over Cuba, and into the Yucatan Peninsula. This system will also kick wet weather over eastern Mexico. Meanwhile the rest of Mexico will see wet weather as a low pressure system spins off the western coast. This will pick up ample moisture from the Pacific Ocean and spread widespread scattered showers over southern Mexico and Guatemala. The area of low pressure will also extend over Central America and pick up Caribbean moisture and trigger moderate to heavy showers and thunderstorms along the eastern coasts of Honduras, Nicaragua, Costa Rica, and Panama. To the east, the Greater and Lesser Antilles will see mild weather with the exception of usual afternoon scattered showers.

In South America, wet weather will persist in the northern countries on Wednesday. Lower pressure to the north will create onshore flow over Colombia, which will allow for periods of heavy rainfall over the country. To the south, widespread scattered showers will persist over Brazil as a trough of low pressure hovers over the center of the country. The system will create a front that will bring moderate to heavy showers and thunderstorms over Paraguay and Uruguay. Sao Paulo will remain rainy with highs near 80(F)/ 26(C).

Further south, a low pressure system passing by the southern tip of the continent will allow for scattered showers over Chile. Santiago will remain north of these storms with mostly sunny skies and highs near 70(F)/ 20(C).