Ciudad Juarez (Mexico) (AFP) - Some roads remained closed in northern Mexico on Monday after the biggest snow storm in more than half a century blanketed parts of the region, authorities said.

The weekend snowfall covered 32 towns in the state of Chihuahua, which borders the US states of Texas and New Mexico, with some places hit by accumulations of 30 centimeters (12 inches) and temperatures of minus-18 Celsius (zero Fahrenheit).

"It's the most intense snowfall in the last 55 years," Efren Matamoros, the civil protection director in the border city of Ciudad Juarez, told AFP.

Seventeen roads were closed over the weekend, but 11 of them reopened on Monday.

The Ciudad Juarez airport resumed operations on Monday after it was shut down over the weekend.