  In the present paper we prove moderate deviations for a Curie-Weiss model
with external magnetic field generated by a dynamical system, as introduced by
Dombry and Guillotin-Plantard. The results extend those already obtained in the
case of a constant external field by Eichelsbacher and L\"owe. The Curie-Weiss
model with dynamic external field is related to the so called dynamic Z-random
walks. We also prove a moderate deviation result for the dynamic Z-random walk,
completing the list of limit theorems for this object.
