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Weather or Not: Heat advisory issued for Baltimore, suburbs Wednesday

The heat and humidity is back, but at least time it won't be around for an extended stretch.

The National Weather Service issued a Heat Advisory from 11 a.m. to 9 p.m. Wednesday for the Baltimore-Washington area, including Carroll County. Highs in Baltimore and Washington are expected to reach 100 degrees. Highs in the suburbs should hit the upper 90s during what will be the latest sweltering day in much warmer-than-average summer.

Heat index values of 105 degrees are expected Wednesday. A heat advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible. Those who work outdoors should drink lots of fluids. By now, you know the drill. Air conditioning is your friend.

The heat index comes after toasty July day Tuesday. The highs in the region reached the upper 90s in most locations and hit triple-digits in the cities. The Tuesday highs, per the National Weather Service and WeatherBug: 100 at BWI Airport, 100 at Reagan National Airport, 99 in Frederick, 98 at Dulles Airport and 95 in Westminster.

The heat wave should be brief. Showers and thunderstorms are likely before midnight Wednesday and once again after 1 p.m. Thursday. A cold front should usher in dramatically cooler air with a high of 82 on Friday. High temperatures this weekend should stick in the 80s.

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