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Engineers expect a giant sinkhole caused by the rains of Tropical Storm Agatha is seen in Guatemala City June 2, 2010. Collapsed roads and highway bridges complicated rescue efforts in Guatemala on Tuesday after Agatha drenched Central America, burying homes under mud and killing at least 180 people.

GUATEMALA CITY - Torrential rains brought by the first tropical storm of the 2010 season pounded Central America and southern Mexico, triggering deadly landslides. The death toll stood at 15 Sunday but authorities said the number could rise.

Tropical Storm Agatha made landfall near the border of Guatemala and Mexico on Saturday with wind speeds of up to 45 mph (75 kph), then weakened into a tropical depression before dissipating over the mountains of western Guatemala.

Although no longer even a tropical depression, Agatha still posed trouble for the region: Remnants of the storm were expected to deliver 10 to 20 inches (25 to 50 centimeters) of rain over southeastern Mexico, Guatemala and parts of El Salvador, creating the possibility of "life-threatening flash floods and mudslides," the U.S. National Hurricane Center in Miami said in an advisory Sunday.

Guatemalan President Alvaro Colom said Saturday night that the rivers in the country's south were flooding or close to it.

Colom said 4.3 inches (10.8 centimeters) of rain had fallen in Guatemala City's valley in 12 hours, the most since 1949.

As of Saturday night, 4,300 people were in shelters and authorities said the number could rise as figures come in from around the country.