Mexico detects first, moderate tsunami sea rise

The Mexican navy says it has detected the first ocean swells related to the tsunami spawned by a magnitude-8.9 earthquake in Japan.

Navy spokesman Jose Luis Vergara says Pacific monitoring stations off the coast have detected swells of 70 centimeters (2 1/3 feet).

Vergara says that "given the height (of the swells), we won't be affected much." Experts had previously warned of possible waves as high as 6 feet (2 meters).

Vergara said Friday that the outlook was "positive as far as we can see, but we cannot let our guard down."