Here’s the timing for Tuesday’s ‘torrential’ rain and thunderstorms

Isolated and then widespread, 'slow-moving' storms are expected in Massachusetts.

Two women share an umbrella while walking down Congress Street during a thunderstorm in Boston on June 28, 2020. Nathan Klima for The Boston Globe

Another hot and sticky day for Massachusetts Tuesday is set to yield some significant thunderstorms.

Scattered storms will form between 2 and 8 p.m. — “slow-moving storms capable of torrential rain,” according to the National Weather Service.

A radar map shared by the weather service early Tuesday morning showed a few isolated storms may drift in mid-afternoon, with more widespread downpours arriving in the evening.

The rain brings chance of localized street flooding and brief but strong wind gusts, the forecast shows.

According to 7News meteorologist Chris Lambert, storms will be more widespread “near and north of the Mass. Pike around dinnertime.”

A heat advisory remained in effect through 8 p.m. Tuesday, as Boston was expected to hit a high of 94 degrees.


Rising temperatures were already well underway just after 9 a.m., when the weather service reported a balmy 85 degrees at Logan International Airport.

Even with storms looming later in the day, forecasters say Massachusetts will need to a wait a bit longer for some relief from its first heat wave of the season.

On Wednesday, Boston is set to see a high of 88 degrees — albeit a bit cooler than Tuesday, the weather service says. More storms are expected as well.

A significant cool-down is expected to arrive on Thursday, when the city is forecast to see a high near 72 degrees, according to the weather service.

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