North Tyneside Council have asked members of the public to remain on their guard near Longsands beach.
There was a tidal surge last night that flooded 20 nearby businesses and several homes.
Another high tide this morning saw waves reaching six feet above the piers and the authorities are staying on stand-by.
More top news
Emma Jesson brings you Saturday night's forecast
Sandiford, a former legal secretary originally from Redcar, was convicted of drug smuggling offences and sentenced to death in 2013.
Durham Crown Court heard that one of the male victims suffered a triple-fractured jaw, while left lying in the gutter, unconscious.