Severe Thunderstorm Watch for Baltimore and Washington this evening:
The Baltimore/Washington National Weather Service in Sterling VA has issued a Severe Thunderstorm Watch for the Baltimore and Washington areas through 9 p.m. At 4 p.m. this afternoon, a line of very strong thunderstorms has pushed across Chesapeake Bay. Severe thunderstorm warnings and a tornado warning that were in effect for Anne Arundel County MD have expired. The line of storms has moved over to the Eastern Shore of Maryland where heavy rain and strong winds can be expected through early evening. As a cold front approaches the area this evening, more thunderstorms are expected to develop, some of which may be severe with heavy rain, local flooding, strong winds, and dangerous lightning.
A very warm, humid flow of air continues over the Middle Atlantic states today. This set-up is a classic "Bermuda High" that will keep the area hot and humid with highs in the upper 80s to lower 90s and heat index values in the mid to upper 90s. Meanwhile, a strong cold front will approach Baltimore and Washington from the west toward evening. This will produce yet another round of widespread thunderstorms on Tuesday afternoon and evening as cooler, drier air behind the front clashes with warm, humid air in place over central Maryland. Some thunderstorms may be severe with very heavy rain and strong winds. Cooler and less humid air will overspread the Middle Atlantic states by the middle of the week with highs only in the upper 70s to lower 80s in Baltimore and Washington by Thursday.
Regional Weather Information
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