CAPE and instability, especially across
Connecticut, will allow for isolated thunderstorms into early this evening, before CAPE weakens. Precipitable water values remain around 2 inches, and with a combination of relatively slow moving storms and possibly training storms, could lead to locally higher rainfall totals. A shortwave approaches late tonight along the frontal boundary to the west, and this will spin up a weak surface low. This will enhance lift across the region late tonight and continuing into Tuesday afternoon as the upper shortwave and surface low track south of Long Island. Precipitable water remains around 2 inches, and the highest rainfall totals will be possible during the day Tuesday.
&&