MIAMI—Tropical Storm Nicholas strengthened as it headed for the Gulf Coast on Sunday, threatening heavy rain and floods in coastal areas of Texas, Mexico, and Louisiana.
Forecasters at the National Hurricane Center in Miami said tropical storm warnings were issued for coastal Texas and the northeast coast of Mexico. Nicholas is expected to produce total rainfall of 5 to 10 inches (13 to 25 centimeters), with isolated maximum amounts of 15 inches, across portions of coastal Texas into southwest Louisiana on Sunday through midweek.
