This is the latest report about the upcoming 9.5 Mega-Quake to strike Japan on the July 23-24-25 weekend, the energy reading at this time indicatng mostly likely during the night between Sunday and Monday, 7/24-25 (Japan time).
Thus, in addition to staying out of places subject to failure in the earthquake, north Honshu residents would do well to stay away from low-lying coastal areas that weekend.