There is evidence that climate change in the Weddell Sea will cause warmer water to flow toward the icy continent and into the ocean cavity circulating beneath a thick (~ 1000 m) ice sheet extension that floats over the Weddell Sea, called the Filchner–Ronne Ice Shelf (FRIS). This paper addresses the impact of this potential warming on the melting of FRIS. It evaluates the previously unexplored feedbacks between ice melting, changes in cavity geometry, tides, and circulation.