3 MD Counties Under Severe Thunderstorm Watch

MARYLAND — After severe thunderstorms moved east across Maryland Monday night, the National Weather Service allowed several storm warnings to expire.

A severe thunderstorm watch remains in effect for Anne Arundel, Harford and Cecil counties until 10 p.m. on Monday, June 21.

A watch means severe thunderstorms are possible in and around the watch area. The National Weather Service defines severe thunderstorms as those with winds of 58 mph or greater and/or hail that is 1 inch in diameter or larger.

Isolated cases of flooding could occur Monday and Tuesday in the Baltimore-Washington region and around the Chesapeake Bay, while a severe storm could occur in southern Maryland as well, according to a hazardous weather outlook from the National Weather Service.

MARYLAND — Severe thunderstorms could create hazardous conditions Monday afternoon and evening in parts of Maryland.

Severe thunderstorm warnings were posted before 7 p.m. for areas in central and northern Maryland.

Parts of Anne Arundel, Baltimore, Harford, Howard and Prince George's counties and Baltimore City are under a severe thunderstorm warning until 7:15 p.m.

Severe Thunderstorm Warning including Bowie MD, Annapolis MD, Severna Park MD until 7:15 PM EDT pic.twitter.com/YoSdaJ2vBN
— NWS Baltimore-Washington (@NWS_BaltWash) June 21, 2021

MEMA ALERT: Severe Thunderstorm Warning for Anne Arundel, Baltimore, Harford, Howard and Baltimore City in MD until 7:15pm. #mdwx
— Maryland Emergency Management Agency (MDMEMA) (@MDMEMA) June 21, 2021

In addition, the National Weather Service has issued a severe thunderstorm warning for Baltimore, Cecil and Harford counties until 7 p.m. on Monday, June 21. Severe storms were on a line from Delta, Pa., to Cockeysville with 60 mph wind gusts that prompted the warning around 6:15 p.m., according to the National Weather Service, which stated the storms were moving east at 35 mph.

During the severe thunderstorm warning period, people should go inside to stay safe from wind and lightning, and drivers should avoid wooded areas until the threat has passed, as trees and branches may fall.

RELATED: Severe Thunderstorm Warning Issued For 3 Counties

At 2:20 p.m., the National Weather Service placed 14 Maryland counties and the city of Baltimore under a severe thunderstorm watch until 10 p.m.

These areas are included in the watch area: Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles, Frederick, Garrett, Harford, Howard, Montgomery, Prince George's and Washington counties and Baltimore City.

"A line of strong to severe thunderstorms with damaging wind gusts is expected to sweep east across our region this afternoon into this evening," the National Weather Service said in a special weather statement Monday, June 21.

"Damaging wind gusts are the primary threat, although large hail and an isolated tornado are also possible," officials said.

Here is the time line for potential storms:

• The initial line of storms may enter western Maryland between 1 and 4 p.m.
• It will move east across west central Maryland between 3 and 5 p.m.
• The line should reach the Baltimore and Washington metro areas and southern Maryland between 5 and 8 p.m.

"All times are current best estimates, and people should be ready to seek shelter when storms threaten or warnings are issued," officials said.

Due to the potential for severe weather, the National Weather Service issued a hazardous weather outlook for the region.

Areas along the Maryland-Pennsylvania border are at an "enhanced risk," meaning numerous severe storms are possible, according to the National Weather Service.

"The risk for severe thunderstorms increases from marginal risk over central Virginia to slight risk generally north of I-66 and US-50 to enhanced risk along and near the Mason-Dixon Line," according to the National Weather Service.

A severe storm is possible Tuesday in southern Maryland, with isolated cases of flooding Tuesday around the Baltimore-Washington region.

See the latest forecast from the National Weather Service.