Methods, algorithm and signal processing means utilizing an explosively formed Harbinger (H) wave to forecast an imminent shock wave and in conjunction with the this trailing Main (M) shock wave determination of H wave velocity and M shock wave velocities, overpressure, dynamic pressure, and density and further the M shock wave epicenter location co-ordinates. These parameter determinations are based on the discovery of a Harbinger wave launched upon formation of the M shock wave which annunciates the incoming M shock wave before its arrival. These variables are further used to devise methods and systems to simultaneously detonate an array of munitions, deploy just in time personnel and/or equipment protection, determine the wave epicenter for identifying enemy combatants and terrorist positions, alert response teams to a deleterious event and its magnitude, signal the location of these deleterious events and determine if a munition has functioned.