Northeast, Mid-Atlantic Brace for Intense Heat Wave

The northeastern and mid-Atlantic U.S. are seeing a brief period of cool, comfortable weather, with overnight lows dropping into the 40s and 50s in some areas. This respite is expected to end midweek, as a significant heat wave brings temperatures into the upper 80s and low 90s by Thursday and Friday, with oppressive humidity pushing heat index values to near or above 100°F. Cities including Pittsburgh, Baltimore, Boston, and Burlington are preparing for this rapid transition. The heat wave is likely to be accompanied by scattered thunderstorms, with risks of strong winds and heavy downpours, especially by Friday and into the weekend. There is an added threat of severe storms and localized flooding due to the unsettled weather pattern. Residents are urged to monitor forecasts and prepare for hazardous heat conditions.