Tropical Storm Kirsten was the sixteenth tropical depression and eleventh tropical storm of the 1966 Pacific hurricane season. The tropical cyclone formed southwest of Mexico on September 25 and moved northeast, with two landfalls occurring near the city of La Paz on the Baja Peninsula and near Los Mochis, Mexico on September 28. Damage from Kirsten, adjusted for inflation, totaled $35.18 million (2008 USD).