Mexico City, Jun 3 (EFE).- Tropical Storm Boris formed Tuesday in the Gulf of Tehuantepec off the coasts of the southern Mexican states of Oaxaca and Chiapas, Mexico's SMN weather service said.
Boris, located at 125 kilometers (78 miles) southwest of Boca de Pijijiapan, Chiapas, is moving north at 7 kph (5 mph) accompanied by sustained winds of 65 kph (40 mph).
The SNM announced a storm alert zone extending from the city of Salina Cruz, Oaxaca, to the mouth of the Suchiate River at Chiapas' border with Guatemala.
The system is expected to dump between 10 and 20 inches of rain across the states of Chiapas, Oaxaca, Veracruz and Tabasco over the coming days, the U.S. National Hurricane Center said.
Mexican authorities warned shipping of maritime conditions and urged the population near Boris to be on the alert for mudslides, overflowing rivers and streams, damaged highways and flooding in lower areas.
A student was killed and three more were injured Tuesday when a tree crashed down at a school in the Gulf coast state of Veracruz due to the torrential rains associated with Tropical Storm Boris.
The tree fell on the patio of a high school in Xalapa, capital of Veracruz, due to the softening of the earth caused by the rains.
Tree branches hit 15-year-old Alondra Cordoba, who died at school. Another three teens suffered slight injuries and were treated at area hospitals.