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Maryland weather: Flash flooding possible Friday morning as Hurricane Michael brings heavy rain

Rain from Tropical Storm Michael’s outer bands began reaching Maryland by Thursday evening, bringing heavy rains to Baltimore throughout the night and into early Friday, especially to the Eastern Shore.

The National Weather Service had issued a coastal flood advisory for shoreline areas of southern Baltimore County and the city.

In Anne Arundel County, high water had closed Maryland 4 North between Talbott Road and Fishers Station on Thursday night, according to the Maryland State Highway Administration. In St. Mary’s County, debris in the roadway closed Maryland 5 in both directions at South Snow Hill Manor Road.

More severe weather was expected in parts of Southern Maryland and the lower Eastern Shore, where forecasters predicted as much as 6 inches of rain.

“Heavy amounts of rain in short periods of time may cause creeks and streams to quickly rise out of their banks as well as the potential for flash flooding in urban areas,” weather service meteorologists warned.

A wind advisory remained in effect overnight with northwest winds of 20 to 30 mph expected with gusts up to 50 mph.

Friday’s forecast calls for sunny skies with a high near 63. It wilbe breezy, with a northwest wind 17 to 25 mph and gusts as high as 47 mph.

On Friday night, there’s a chance of showers after midnight with increasing clouds and a low around 49. Northwest wind of 6 to 13 mph is expected with gusts as high as 23 mph. The chance of precipitation is 50 percent.

On Saturday, there’s a slight chance of showers before noon. It will gradually become mostly sunny with a high near 59. West winds of 6 to 14 mph are expected with gusts as high as 25 mph. The chance of precipitation is 20 percent.

Tornado watches and flash-flood warnings were in effect early Friday across much of Virginia and North Carolina, and meteorologists said severe weather threat could extend into southern parts of Maryland. Along with impacts from the fringes of Michael, a cold front is forecast to move through the mid-Atlantic on Thursday night into Friday, helping stir gusty winds and thunderstorms.

Michael, the third-most powerful hurricane to hit the United States mainland in recorded history, made landfall Wednesday and has killed at least six people. Search-and-rescue teams fanned out across the Florida Panhandle on Thursday to reach people trapped in wreckage in the storm’s wake.

Michael finally weakened to a tropical storm Thursday, but was still menacing the Southeast with heavy rains, blustery winds and possible spinoff tornadoes, soaking areas swamped by epic flooding last month from Hurricane Florence. More than 900,000 homes and businesses in Florida, Alabama, Georgia and the Carolinas were without power.

The Associated Press contributed to this article.

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