Category 3 is the third-highest classification on the Saffir–Simpson hurricane wind scale, and categorizes tropical cyclones with 1-minute maximum sustained winds between 96 and 112 knots (110 and 129 mph; 178 and 207 km/h; 49 and 58 m/s). Tropical cyclones that attain such winds and move over land while maintaining those winds are capable of causing severe damage to human lives and infrastructure. From 1949 to 2023, a total of 85 recorded Pacific hurricanes have peaked at Category 3 strength within the Northeast Pacific tropical cyclone basin, which is denoted as the part of the Pacific Ocean north of the equator and east of the International Date Line. This does not include storms that also attained Category 4 or 5 status on the scale.
The development of Category 3 hurricanes in the Northeast Pacific basin is influenced by many factors. During the Northern Hemisphere winter and spring months of December to April, sea surface temperatures in the tropics are usually too low to support tropical cyclogenesis. Furthermore, from January to April, the North Pacific High and Aleutian Low induce strong vertical wind shear and unfavorable conditions that serve to prevent the development of hurricanes. These effects are reduced or even disappear during hurricane season from May to November, when sea surface temperatures are also high enough to support tropical cyclogenesis; the bulk of recorded Category 3 hurricanes developed during June to October. Global weather patterns may also influence hurricane development in the Northeast Pacific. El Niño events result in increased numbers of powerful hurricanes through weaker wind shear and higher sea surface temperatures within the basin, while La Niña events reduce the number of such hurricanes through the opposite.
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