On Thursday at 6:01 a.m. the National Weather Service released a flash flood warning in effect until 9 a.m. for Bristol, Middlesex, Norfolk, Plymouth, Suffolk and Worcester counties.

Heavy rainfall caused areas of flooding on I-93 and other major roadways in Massachusetts on Thursday morning.

A deluge dumped 6 inches of rain — maybe more — in a wet and wild commute. The flash flooding was so perilous the National Weather Service urged drivers to “turn around, don’t drown” as flash flooding fueled by overnight rains crippled the Thursday morning commuter crawl.

The National Weather Service released an updated flood watch at 8:53 a.m. on Thursday in effect until 4 p.m. for Middlesex, Essex, Norfolk, Suffolk, Bristol and Plymouth counties.

Boston, Quincy, Brockton, and other South Shore communities are under a flood watch until 9 a.m., according to the National Weather Service.

Unsettled weather today could product thunderstorms capable of causing flash floods in parts of Massachusetts.

According to the National Weather Service, there are areas outside of the six counties that are likely to experience flooding. These areas include Boston, Brockton, Quincy, Newton, Brookline, Weymouth, Braintree, Natick, Randolph, Franklin, Needham, North Attleborough, Norwood, Milford, Milton, Stoughton, Attleboro, Dedham, Walpole, and Mansfield.

The extreme heat is returning to Massachusetts and the National Weather Service has issued a heat advisory because of how hot it will feel through Monday.

The National Weather Service issued a flash flood warning for Boston, Quincy, Brockton, and other nearby communities. See where

The agency predicted rain would fall at a rate of 1 to 2 inches per hour, potentially overwhelming small creeks and streams, streets, highways and underpasses, as well as other poor drainage and low-lying areas.

There's no sense in finger-pointing over whether or not alerts went out fast enough in Texas, said Landry. As she sees it, preparing for the weather comes down to knowing the landscape where you live and planning out what to do if disaster strikes. "You have to be aware and prepared," she said.