The 19th Southern California Flow Physics Symposium (SoCal Fluids XIX) will be held at UC Riverside on Saturday, April 18, 2026. This conference aims to bring together researchers from universities throughout Southern California, working in all areas of fluid dynamics, for a one-day exchange of ideas in an informal and collaborative atmosphere. To promote education and exposure, talks are invited from graduate students and postdocs, as well as from undergraduates who have been pursuing research. Faculty and undergraduate students are highly encouraged to attend. All universities in Southern California are welcome to participate. [Registration Deadline: April 3rd, 2026]