Аннотация:The temporal variation of seismicity, basedon the retrospective analyses of three seismicparameters i.e., number of earthquakes, b-value and energy released, have shown signif-icant changes. Their remarkable relation withstrong earthquakes occurrence was formulatedas a qualitative character precursory seismici-ty pattern, which were interpreted in terms ofa strong earthquakes occurrence preparationphases. The main characteristic of this patternis that permits the identification of two periodof low and high probability for an earthquakeoccurrence, suggesting its utility in the cur-rent seismic hazard assessment, by the contin-uous monitoring of the temporal variation ofthe seismic parameters in a given area. Thispaper investigates the qualitative and quanti-tative characteristics of the proposed precurso-ry seismicity pattern, before al strong earth-quakes occurrence in Greece the time period 2000-2008