 We have been watching a frontal system shifting to the south and east over the last several days. From that, there have been heavy gusty thunderstorms along and ahead of that boundary. Even yesterday, some gusty thunderstorms moved through the portions of the northeast into the middle Atlantic. And today, that front will once again cause strong to severe thunderstorms across a good portion of the northeast into the middle Atlantic and extending westward to the Tennessee Valley into southern Missouri.