  We compute anomalous transport phenomena sourced by vector and axial magnetic
fields in out of equilibrium setups produced by Vaidya background metrics in
holography. We use generalized Vaidya metrics that include momentum relaxation
induced by massless scalar fields. While the background metric and gauge field
show formally instantaneous thermalization the chiral magnetic effect has
significantly large equilibration times. We study how the equilibration of the
chiral magnetic effect depends on the length of the Vaidya quench and the
momentum relaxation parameter. These results shed some light on aspects of the
chiral magnetic effect in out of equilibrium situations as the quark gluon
plasma produced in heavy ion collisions.
