A method of performing a fracture operation at a wellsite, the wellsite positioned about a subterranean formation having a wellbore therethrough and a fracture network therein, the fracture network comprising natural fractures, the wellsite stimulated by injection of an injection fluid with proppant into the fracture network, the method comprising: obtaining wellsite data comprising natural fracture parameters of the natural fractures and obtaining a mechanical earth model of the subterranean formation; generating a hydraulic fracture growth pattern for the fracture network over time, the generating comprising: injecting the injection fluid with proppant into the fracture network in the wellbore and extending hydraulic fractures from the wellbore and into the fracture network of the subterranean formation to form a hydraulic fracture network comprising the natural fractures and the hydraulic fractures; determining hydraulic fracture parameters of the hydraulic fractures after the extending; determining transport parameters for the proppant passing through the hydraulic fracture network; and determining fracture dimensions of the hydraulic fractures from the determined hydraulic fracture parameters, the determined transport parameters and the mechanical earth model; and performing stress shadowing on the hydraulic fractures to determine stress interference between the hydraulic fractures, wherein performing stress shadowing comprises performing a three dimensional displacement discontinuity method; and repeating the generating over time as the fracture network changes and updating the fracture growth pattern over time based on the performed stress shadowing. obtaining wellsite data comprising natural fracture parameters of the natural fractures and obtaining a mechanical earth model of the subterranean formation; generating a hydraulic fracture growth pattern for the fracture network over time, the generating comprising: injecting the injection fluid with proppant into the fracture network in the wellbore and extending hydraulic fractures from the wellbore and into the fracture network of the subterranean formation to form a hydraulic fracture network comprising the natural fractures and the hydraulic fractures; determining hydraulic fracture parameters of the hydraulic fractures after the extending; determining transport parameters for the proppant passing through the hydraulic fracture network; and determining fracture dimensions of the hydraulic fractures from the determined hydraulic fracture parameters, the determined transport parameters and the mechanical earth model; and injecting the injection fluid with proppant into the fracture network in the wellbore and extending hydraulic fractures from the wellbore and into the fracture network of the subterranean formation to form a hydraulic fracture network comprising the natural fractures and the hydraulic fractures; determining hydraulic fracture parameters of the hydraulic fractures after the extending; determining transport parameters for the proppant passing through the hydraulic fracture network; and determining fracture dimensions of the hydraulic fractures from the determined hydraulic fracture parameters, the determined transport parameters and the mechanical earth model; and performing stress shadowing on the hydraulic fractures to determine stress interference between the hydraulic fractures, wherein performing stress shadowing comprises performing a three dimensional displacement discontinuity method; and repeating the generating over time as the fracture network changes and updating the fracture growth pattern over time based on the performed stress shadowing.