Tropical storm Boris bore down on Mexico and Guatemala Tuesday, bringing drenching rains to a region stricken just days earlier by deadly flooding and mudslides.
Five people already have died from flooding in the area in recent days as forecasters warned that the storm was likely to make landfall sometime on Wednesday.
Rain from the storm is "likely to result in life-threatening flash floods and mudslides," the Miami-based National Hurricane Center said.
The NHC said the storm, churning out in the Pacific, is packing maximum sustained winds of almost 40 miles (64 kilometers) per hour.
Boris was expected to dump as much as 10 to 20 inches (25 to 50 centimeters) of rain over a large part of southern Mexico through Saturday.
However, as many as 30 inches (75 centimeters) are likely in mountainous regions of Mexico's Oaxaca and Chiapas states, the NHC said, while Guatemala was expected to see 5 to 10 inches (12.5 to 25 centimeters).
In Guatemala, rough weather has already taken its toll in recent days with officials saying that five people had perished in a landslide near the Mexican border on Saturday.
The national disaster relief agency said as many as 100,000 people have been affected by the inclement weather that has caused damage to homes and roads.
Schools have been closed in parts of the country due to the stormy conditions.