As Hurricane Irma tore through the Caribbean, a tropical storm in the Atlantic and another in the Gulf of Mexico were upgraded to hurricane status on Wednesday, the National Hurricane Center said.
It was considered a Category One hurricane on the five-level Saffir-Simpson scale.
The NHC said that tropical storm Katia in the southwestern Gulf of Mexico had also become a Category One hurricane.
It said a hurricane watch was in effect for the coast of the Mexican state of Veracruz where heavy rainfall could be expected.
Hurricane Irma, a Category Five storm further to the west, is currently battering the Caribbean and threatening Puerto Rico, the Dominican Republic, Haiti, Cuba and south Florida.