(Jim Havard/Twitter)A vigorous spring storm system, which caused extensive damage and eight fatalities in the South, swept through the Washington region Sunday evening into the predawn hours Monday. The system was not nearly as violent in the Washington region as it was to the south, but it still generated some intense storms, which led to some damaging gusts. The unstable air enabled air rising along the cold front to soar to great heights, triggering the strong line of storms in the predawn hours Monday. Meanwhile, the shear created zones of spin within storm clouds and helped generate corridors of wind damage. The wavelike appearance was generated by small vortices and regions where strong winds caused parts of the line to surge forward, creating small arcs and bow shapes.

Source: Washington Post April 15, 2019 15:49 UTC