Maxima are evident just east of the northern Philippines and in the South China Sea. Contour interval is every 0.1 storms per year. A prominent extension to the activity is evident in the eastern part of the basin. Contour interval is every 0.2 storms per year. Notice the maxima just east of Luzon and a second, strong maximum over the South China Sea.
Little activity is observed over the eastern part of the basin.
The contour interval is every 0.2 per year. Chart of observed tropical cyclone characteristics along with a statistical analysis of their significance. Genesis latitude and longitude for the various intensity categories follows next. Finally, median latitude and longitude for the various intensity categories are featured. Regional differences in activity are apparent.