Radio Formula – A cold air mass coupled with the entry of moisture from the Pacific might cause very heavy rainfall in Jalisco, Zacatecas, Coahuila, Chihuahua, Nuevo Leon, Tamaulipas and Aguascalientes; strong rain in Michoacan, Colima, Sonora, Durango and San Luis Potosi; and less intense in the center, north, south and southwest of the country.

http://www.radioformula.com.mx/notas.asp?Idn=486887&idFC=2015