The warning announced Wednesday gives specific cities and states, with a map of the country, where gun battles and drug trafficking violence are likely to occur. Mexican tourism has been under a cloud for the last six years since gruesome killings related to drug cartels scared off visitors to many parts of the country.
Here are some of the areas cited in the warning (and here's the entire State Department announcement):
--There are no advisories in effect for Cabo San Lucas in southern Baja; Mexico City; San Miguel de Allende and Leon in southern Mexico; Cancun, Cozumel, Playa del Carmen, Riviera Maya and Tulum in Quintana Roo; the state of Oaxaca; and Merida and Chichen Itza in the Yucatan.
--Americans should "exercise caution," particularly at night, in Tijuana, where 34 U.S. citizens were killed in 2011, likely related to drug trafficking; the city of Monterrey in Nuevo Leon; and Mazatlan, a popular stop for cruise ships.
--U.S. residents should avoid traveling to the states of Chihuahua, Durango, San Luis Potosi, Sinaloa, parts of Sonora, Zacatecas and others.
The warning, citing figures provided by the Mexican government, says 47,515 people were killed in drug-related violence in Mexico from Dec. 1, 2006, to Sept. 30, 2011.
The warning supersedes a prior one issued April 22.