Residents are being urged to take "necessary precautions" after the Jersey Met Office issued an orange tide warning for the island's south coast.
Jersey Coastguard posted on Facebook, advising that strong winds and high tides could result in waves crashing over sea walls.
The coastguard warned that the high tides on Thursday and Friday may lead to "potential disruption," including water and debris on the roads.
High tides are expected to reach about 11.8m (38.7ft) at 19:16 on Thursday, and 11.7m (38.3ft) at 07:38 on Friday.
Jersey Coastguard emphasized: "Please take the necessary precautions."