Wet tonight into tomorrow, cold arrives on Friday

Right now it is mostly cloudy in SNE with just a few passing showers we received last night are way out of the picture.  Heavier rains from a developing low pressure system originating in the Gulf of Mexico is moving into the TN Valley now and will continue to move the NNE or NE into western NY in the overnight.  Heavy rains and possible thunderstorms will arrive tomorrow morning and last through the afternoon before ending.  Heavy rains will likely cause some localized street flooding.  Cold air advection will build into the region as the front lifts northeastward, and colder than average temperatures will begin to build into the region.  Right now the weekend looks rather cold and dry.