This photos posted to Twitter on May 15 shows cars submerged in a Frederick County neighborhood as heavy downpours trigger flooding in the area.
© Melvin Salina
This photos posted to Twitter on May 15 shows cars submerged in a Frederick County neighborhood as heavy downpours trigger flooding in the area.
Heavy rain is exacerbating conditions around the region, especially in already-waterlogged Frederick County, Maryland, which remains under a flood warning. An additional 2 - 5 inches of rain are possible through Saturday.

After days of heavy rain, the entire D.C. region now has a concern greater than big puddles and wet commutes.

The region is under a flood watch through 8 a.m. Saturday, according to the National Weather Service.

And in already-waterlogged Frederick County, Maryland, a flood warning remains in effect through Sunday evening.



A car is submerged in grassy, muddy rain water in Frederick following days of heavy rain.

A car is submerged in grassy, muddy rain water in Frederick following days of heavy rain.
More rain is expected on Friday, up to three inches, according to Storm Team4 Meteorologist Chuck Bell.

Friday morning's commute was hindered by multiple reports of downed trees and utility wires. In Potomac, Maryland, on River Road near Falls Road, a downed tree blocked both lanes of the major connector to the Capital Beltway. (Check WTOP's traffic page for live status updates.)

A bridge is in ruins in Frederick County, Maryland after a storm ripped through the DC-area Tuesday, prompting the county to declare a state of emergency.

A bridge is in ruins in Frederick County, Maryland after a storm ripped through the DC-area Tuesday, prompting the county to declare a state of emergency.
#POTOMAC-River Rd BOTH WAYS near Falls Rd, TREE DOWN temporarily blocks ALL LANES in #mdtraffic. https://t.co/nb3VFR1abs

— WTOP Traffic (@WTOPtraffic) May 18, 2018
Stay alert for new flood warnings, as they mean flooding is imminent or occurring and that people should avoid flooded roads.

Warnings have also been issued for various creeks and rivers around the D.C. area. (Find updated advisories for Maryland and Virginia on the weather service's website.)

Closer to the District, the weather service has issued a coastal flood advisory — effective through 8 p.m. Friday — for the shorelines of D.C., Arlington County and Alexandria. A coastal flood watch will be in effect from then until Sunday morning.

Storm Team4 Meteorologist Amelia Draper warned of a severe impact on the Georgetown waterfront.



An additional 2 - 5 inches of rain are possible through Saturday, Storm Team4 Meteorologist Doug Kammerer said.

City of Frederick Mayor Michael O'Connor declared a local state of emergency Wednesday, urging all residents to sign up for emergency alerts and take all weather warnings seriously as more flooding scenarios are possible.

In Frederick, the nearby Monocacy River was at 14.1 feet around 2 p.m. Thursday, not far from the flood stage of 15 feet.

NBC4 caught one resident taking a dip in the flood water!

NBC4 caught one resident taking a dip in the flood water!
Residents are being told to limit their water use in the coming days in order to take pressure off the area's wastewater treatment plant and help prevent sewage from backing up into homes.

Frederick police warned of road closures and said new areas may be affected. (Follow Frederick police on Twitter for updated list of road closures, which the department said is constantly changing.)



The possibility of that much rain means residents should be checking their drains to make sure they're clear of debris so they don't back up, in addition to being generally cautious.

Drivers, too, should be aware of the dangers of high water.

On Frederick's Willowbrook Road, for instance, floodwaters pushed a car 45 to 50 feet into a grassy field. "The driver was still in it when it washed away," said Clay Bussard with Bussard's Auto Repair and Towing, who's been towing cars stuck in high water, many times after people inside were pulled out by rescue crews.

At least 10 roads were closed in Frederick, Maryland, following Tuesday night's storm.
© NBC
At least 10 roads were closed in Frederick, Maryland, following Tuesday night's storm.
"It's been nonstop," he said. "Some of the city roads are pretty bad."

Next week might still be wet, but for now it appears that it won't compare to what the area has been seeing the last few days.