Diagnostic models can be relatively simple and practical tools for win
d flow modelling the in complex terrain. These models can be suitable
for operative use in a wide variety of routinely situations. For this
purpose it is necessary to include the mathematical model in a user-fr
iendly software package so that it can be effectively used by the staf
f of environmental centres. DI.M.C.OR is a software package developed
following these guidelines. It includes a diagnostic, mass-consistent
model to reconstruct three dimensional wind fields in complex orograph
y. A graphical interface ensures a user-friendly interaction with the
code.