Currents question in Open Lake Discussion Posted July 3 The other day out of Sandy we started the day with the thermocline down 110, when we left at 11:00 it was up to 70 feet. That’s a ton of moving water. The currents were fierce. It was the day after a hard NW blow. You are correct about the current when the winds have been stable, l find there is generally an East current (water moving East). The currents get crazy from 9 mile point into Mexico bay as that East current is forced to the North.