Numerous strong to severe thunderstorms are expected to break out this afternoon and evening across the DC Region, well in advance of the approach of tropical storm Isaias. Thunderstorms could produce strong, damaging winds with an isolated tornado possible. The image from the latest high resolution NAM model below (courtesy, tropicaltidbits.com) shows a nasty line of storms moving into our region between 4 and 8pm.
The latest ensemble models (spaghetti chart below) shows confidence in a storm track from just east of Richmond, VA to the mouth of the Potomac before crossing over the Bay into Delaware and New Jersey.
