Heavy rain and thunderstorms swept across the state Friday evening as strong wind uprooted trees and flash flooding hit parts of the state.

A tornado watch from the National Weather Service in the afternoon was lifted at 9 p.m. Friday, with weather officials reporting no tornados in ­Massachusetts.

Up to 8,203 customers remained without power Friday night due to 15 outages, according to National Grid’s website. National Grid reported as many as 13,602 people without power across Massachusetts during the thunderstorm, but power was restored to thousands of customers during the day.

Damage from the storm was felt most intensely in Southeastern Massachusetts, said weather service spokeswoman Rebecca Gould. Wind damage caused trees to fall over and floods reaching up to 4 feet caused significant damage, especially in Taunton, Fall ­River, and New Bedford, she said.

In Foxborough, an elderly woman suffered chest pains ­after a bolt of lightning struck a tree and traveled through the ground into her house, Fire Captain Donald Treannie said.

“The bolt basically put a pine tree in the yard making a 2 foot-by-2 foot trench into the house,” he added. The woman is in stable condition, he said.

In Brockton, the flooding on Ettrick Street trapped a couple in their car until they were pulled out by Brockton firefighters, said Fire Lieutenant Daniel Santry.

Earlier Friday, the weather service issued a hazardous weather outlook for the state continuing into Saturday, ­because some storms could produce strong winds and torrential rain. Saturday’s rain will be more widespread. Simpson said that the exact time storms will roll through Boston is hard to predict, but that they will most likely arrive during the maximum heating hours of the day in the late afternoon.

Temperatures Saturday will be in the low 80s, but the ­humidity will be thick and ­uncomfortable, meteorologist Bill Simpson said.

The wet weather is caused by a tropical air mass that will be replaced by a cold front Sunday, casting out the humidity and lowering the risk for rain, Simpson said. There is a slight chance for a final round of storms Sunday morning, but the day will otherwise be partly sunny with a high of 85.