The evolution and extension of Santa Ana winds over the Pacific Ocean, off the coasts of California and the Baja California Península, is documented form QuikScat satellite observations. The typical wind pattern in this region is towards the southest, but between 9 and 12 February 2002 it was modified by Santa Ana Winds, changing in direction towards the south, southwest and west. The changes were notable at first in southern California, but the largest indices of variation occurred between 26°N and 28°N of the Baja California Península, with maxima in the Gulf of California, mainly in the northern part.