Impacts of Two Types of El Niño and La Niña Events on Typhoon Activity

Table 3

Percentage of different typhoon categories of each event for JMA and JTWC from 1977 to 2011.

Event/data	JMA			JTWC
	Tropical storm	Category 1 + 2	Category 3 + 4 + 5	Tropical storm	Category 1 + 2	Category 3 + 4 + 5
El Niño	33.9%	38.0%	28.1%	25.8%	28.3%	45.8%
El Niño Modoki I	41.8%	44.1%	14.1%	32.7%	29.6%	37.7%
El Niño Modoki II	41.7%	45.0%	13.3%	25.9%	39.7%	34.5%
Normal	44.5%	44.5%	11.0%	35.4%	33.3%	31.2%
La Niña	54.7%	36.8%	8.5%	41.5%	27.7%	30.8%