Staff members spent two days before thestorm piling sand bags, checking generators, removing or raising electrical equipment and distributing oxygen canisters around the site.
In northern Indiana on Tuesday, sand whipped by high winds spawned by the far-reaching storm forced cancellation of classes at one school, the Associated Press reported.
New floodgates are being fitted to the Afon Erch near the town's harbour, and 400 metres of sand dunes - damaged in 2000 by a severe storm - are being strengthened.