Puerto San Carlos, Mexico ? Hurricane Norbert barreled toward the Mexican mainland early today after tearing off roofs and forcing hundreds of people to flee widespread flooding on the Baja California peninsula.

It hit land near Puerto Charley on Baja’s southwest coast as a Category 2 hurricane, but weakened to Category 1 after emerging over the Gulf of California, according to the U.S. National Hurricane Center in Miami. Norbert was expected to reach mainland Mexico sometime before dawn.

Baja residents fled to shelters in school buses and army trucks as floodwaters rose in their homes. Winds uprooted palm trees and the water rose knee-high in some streets of the town of Puerto San Carlos.

“We left our house because we were scared. Our house is pretty poor and the water was already coming in,” said Maria Espinosa, 54, who arrived at a high school with her daughter and two grandchildren. They joined about 60 other people sitting on foam mattresses and blankets.

Streets turned into rushing, knee-deep rivers in Ciudad Constitucion, on the southern peninsula. Furniture, car parts and trash cans floated down the roads that were deserted except for a few police patrols and a soaked dog on high ground.