A short line of storms developed rapidly over Essex County.  The MRMS data (lower right pane) indicated a MESH of nearly 2 inches!  At the same time, the 3DVAR vertical velocity data (upper right pane) was 14 m/s for the same cell.  Using this data against already high reflectivity (upper left) increased confidence for a warning, especially given the environment.  Unfortunately, the 1KM wind field (lower left) gave a mixed signal at the same time frame, which was possibly an effect of the terrain.