Updates: Tornado watch runs until 8 p.m. as remnants of Fred pass the D.C. region
Don’t let the westward location of Fred’s low-level center lull you into thinking we’ve largely missed its impacts. In fact, the more dangerous breeding ground for inland tornadoes lies to the east of the center of circulation, often removed from the heaviest rain, in the so-called eastern semicircle. There, intense wind shear and concentrated, low-level spin often combine to produce rotating storm cells.
August 18, 2021, 5:26 pm