The risk for flooding downpours and severe thunderstorms will shift east across the Northeast and mid-Atlantic states tomorrow.  A trailing frontal boundary across the Ohio Valley will also serve as a focal point for additional shower and thunderstorm development. 

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Across Florida and the coastal Deep South, showers and thunderstorms will fire up in spots, mainly in the afternoon. Much of Texas and the Desert Southwest will continue to bake under triple-digit heat once again as a dome of high pressure remains overhead. 

Along the northern periphery of this high pressure, a weak storm system will spark showers and storms in spots across the Midwest. Much of the Western states will enjoy seasonably warm conditions along with a mostly sunny sky. 

DAILY EXTREMES 

National High Monday 107 at Frederick, OK 

National Low Monday 29 at Stanley, ID