* A approaching cold front will bring strong to severe thunderstorms
Saturday afternoon and evening.
Saturday: SPC continues to include much of southern New England
under a slight risk for severe weather, with the main threat being
straight-line damaging winds. During the morning, anticipating
mainly elevated convection with a threat of for locally heavy rain.
During the afternoon, surface-based instability increases to 1000-
2000+ J/kg, with with 35-45 kts of shear, while a cold front
approaches and passes through much of SNE. Ahead of the cold front,
we maintain 1.5-2 inch PWATs, thus locally heavy rainfall is
expected. This could produce urban and poor drainage flooding. It
should be noted that with the 12Z CAMs, they have backed off some on
the areal coverage of convection across SNE, will need to keep an
eye on future runs. At this time, the greatest threat for severe
weather looks to be across northern CT, thru central RI and SE MA in
the afternoon/early evening.