Resumen
The warm an cold events in the Tropical North Atlantic (6-22°n,15-80°w) region are quantified using sea using sea surface temperature (sst) normalizad indices. a arm (cold) event was definied if the 5-mounth running mean index was above (below) the fourth (second) quintile for six or more months. The event occurrence was non-periodic and the durations showed great variability. Aarm and cold events tend to begin during the first semester of the year and end during the secondo semester.