The pattern across the eastern half of the country has certainly been wet and that wet pattern will continue the next two weeks. The GFS model shown above clearly shows heavy rains from the Northern Plains into the Southeast. Lets be cautious about the rain in the Southeast because the GFS wants to bring another tropical system north and it’s probably too early to start talking about the potential. However, the model did well with Alberto. In any case, with higher then normal dew points and fronts slamming into those dew points, expects times when flash flooding can occur.

August, 2017, I tracked a supercell thunderstorm  south of State College. Heading down Rt-45, I tracked right under the rotating wall cloud as seen in this image. If you look closely, you can see the cylinder look of the cloud with rising scud where the tornado could have formed if the rotation in the storm was greater.