As the system progressed inland towards the Sierra Madre del Sur to the west of the Isthmus of Tehuantepec, the states of Oaxaca and Chiapas were affected with torrential rains. Areas of Chiapas near the Guatemalan border were hit hard, particularly the coastal border town of Tapachula. In Tapachula the river overflowed its banks and caused tremendous damage (including the destruction of all the bridges leading in and out of the town), meaning that it was only accessible through the air. The state government reported that 33 rivers broke their banks and that an indeterminate number of homes, upwards of 20 bridges, and other infrastructure were smashed in the storm's wake.