BOSTON (WHDH) - Parts of Massachusetts are under a severe thunderstorm warning, while the entire state is under a severe thunderstorm and flash flood watch through Wednesday evening.

Heavy downpours and damaging wind gusts are expected to whack the region before brutally hot temperatures set to move in this weekend.

Parts of Essex, Middlesex, Norfolk, Suffolk, and Worcester counties are under a severe thunderstorm warning until 6 p.m.

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The severe thunderstorm watch is in effect until 10 p.m. It covers all of the state, with the exception of the islands.

Strong winds, torrential rain, and frequent lightning could knock out power in some areas.

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Parts of Middlesex, Norfolk, Plymouth, and Suffolk counties are under a flood warning until 6 p.m.

“With added water vapor to the atmosphere thanks to remnant moisture from Barry, the atmosphere is juiced to provide a lot of rain in a short amount of time,” Lambert wrote in his latest weather blog.

Some towns and cities could see 2-3 inches of rain and street flooding, while other areas could see less than a half-inch of precipitation.

All of Massachusetts is under a flash flood watch until 11 p.m. Two inches of rain per hour is possible in some areas.

The chance for hail or a tornado is low.

Showers with the chance of a few rumbles of thunder are expected to persist into Thursday morning before the heat arrives.

Temperatures will sit in the low 90s on Friday but Saturday and Sunday will bring scorching conditions.

Points along the South Shore, Boston, and up through the Merrimack Valley could see 100-degree heat on Saturday, in addition to humid air.

“Over the weekend, it’s all about the heat. The last time Boston hit 100 was July 22, 2011, with a reading of 103,” Lambert wrote. “If we get all day sun, we’ll hit 100 on Saturday.”

Sunday will bring mostly sunny skies with highs in the mid-90s.

The heat and humidity will linger into Monday.

Tuesday will bring relief with highs in the low 80s and low humidity.

For more, visit the 7Weather page.

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