In order to efficiently manage post-storm damages, we developed a computer software that would be used as a decision support system by the public authorities to make the best decisions as soon as possible after the storm, as well by showing an overview of the present situation as by comparing efficiency of several prospective simulations. The model was built on the basis of previous windthrow events in Europe and its parameters were defined after a full literature review. The system dynamics approach was used to simulate the complex scheme composed by post-storm management operations (inventory, selling, harvesting, transport and transformation). Thirty parameters can be modified by the operator to simulate the crisis situation. The main entry system is the amount of damage, which can be estimated in a very short time (3 days) by using the regional forest inventory network. The first results showed a great potential to predict evolution of a windthrow crisis and the bottlenecks which have to be solved to improve post-storm management. Of course, a validation in real conditions should confirm tool efficiency and possibility to extend its scale.