sentences:  The lack of intensification could be due to moderate wind shear and entrainment over the Gulf of Mexico.Tropical Storm Beryl continued to track to the northwest toward the Rio Grande Valley area in the southern portion of the U.S. state of Texas.The storm made landfall early on August 15 along the Mexican coast about 105 mi (165 km) south of Brownsville, Texas, 35 mi (55 km) north La Pesca, Tamaulipas and about 115 mi (185 km) north of Tampico.