Weather Underground Forecast for Sunday, May 19, 2013.

Tropical cyclone activity is not anticipated for the Atlantic Basin or the Eastern Pacific Basin on Sunday. However, areas of active weather will persist for the Caribbean Sea and Latin America. Low pressure continues moving through the Southern U.S., pushing a trough of low pressure across Mexico and into the Gulf of Mexico. This will continue pulling moisture onshore from the east, maintaining chances of showers and thunderstorms across central and eastern Mexico. Mexico City will see partly cloudy skies with a chance of thunderstorms in the afternoon and evening. To the south, a monsoonal trough of low pressure lingering over Central America will allow for onshore flow from the Pacific Ocean to prevail. This will support more thunderstorm activity across Panama and Costa Rica. To the east, a tropical wave of low pressure approaches Venezuela from the east, bringing storms to the region. However, these storms will remain south of the Greater and Lesser Antilles on Sunday.