  UHECR propagation in a turbulent intergalactic magnetic field in the
small-angle scattering regime is well understood for propagation distances much
larger than the field coherence scale. The diffusion theory doesn't work and
unexpected effects may appear for propagation over smaller distances, from a
few and up to 10-20 coherence scales. We study the propagation of UHECRs in
this regime, which may be relevant for intermediate mass UHECR nuclei and nG
scale intergalactic magnetic fields with 1 Mpc coherence scale. We found that
the trajectories form a non-trivial caustic-like pattern with strong deviation
from isotropy. Thus, measurements of the flux from a source at a given distance
will depend on the position of the observer.
