UPDATE 4-Hurricane Max makes landfall on Mexico's touristy Pacific coast

(Updates storm conditions)

MEXICO CITY, Sept 14 (Reuters) - Hurricane Max, a Category 1 hurricane, touched down on Mexico's west coast on Thursday, the U.S. National Hurricane Center said, bearing down on a region popular with tourists that includes resorts like Acapulco, Zihuatanejo and Ixtapa.

The storm brought maximum sustained winds of 80 miles per hour (129 km per hour) on Thursday afternoon and was about 55 miles (89 km) east-southeast of Acapulco, the center said, adding it was moving east at 8 mph (13 kph).

The center warned of heavy rains and flooding in the southern coastal states of Guerrero and Oaxaca.

Max will likely be downgraded to a tropical storm on Thursday evening.

Category 1 is the lowest level on the five-tier Saffir-Simpson scale that measures hurricane wind speeds.

In the state of Guerrero, home to some of Mexico's major tourist resorts, Max could dump as much as 20 inches (51 cm) of rain, the NHC said, potentially triggering flash floods and mudslides.

The storm is bad news for Acapulco as tourists prepare to travel to the city to celebrate Mexico's Independence Day this weekend.

Meanwhile, tropical storm Norma formed in the Pacific on Thursday, according to the NHC. The storm, which is currently 360 miles (579 km) south of Cabo San Lucas, on the southern tip of the Baja California peninsula, could become a hurricane by late Friday.

Max arrives a week after a powerful 8.1-magnitude quake shook southern Mexico, destroying thousands of buildings in the state of Oaxaca and killing at least 98 people nationwide. (Reporting by Gabriel Stargardter, Julia Love and Miguel Gutierrez; Editing by Andrew Hay and Lisa Shumaker)