Flood Watch Issued As 2nd Round Of Storms Hit MD

A second day of thunderstorms and showers could overwhelm small waterways and spark flash flooding Tuesday in Maryland.

A flood watch covers most of the state, from Hagerstown to Elkton and Annapolis to the Washington suburbs.

"In total, a widespread 1 to 2 inches of rain is expected, with embedded higher totals of 2 to 5 inches," the National Weather Service said in the watch. "Flash flooding may occur as a result.

Tuesday's flood watch runs from 2 p.m. through 11 p.m.

"Flash flooding caused by excessive rainfall is possible," the weather service said. "Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations."

The watch covers Baltimore City and the following counties:

• Washington
• Frederick
• Carroll
• Baltimore
• Harford
• Cecil
• Montgomery
• Howard
• Anne Arundel
• Prince George's

An active weather day is expected today, with threats for both flash flooding and severe thunderstorms this afternoon into this evening. A Flood Watch has been issued for much of the area, and many of the same locations are in a Slight Risk for Severe Thunderstorms from SPC. pic.twitter.com/95MFZ06XJf
— NWS Baltimore-Washington (@NWS_BaltWash) July 1, 2025

Train commuters faced weather issues Tuesday, the Baltimore Sun said. Storms knocked out power to the Aberdeen train station, and the pedestrian tunnel was flooded, the Maryland Transit Administration said in a service alert.

The National Weather Service expects numerous thunderstorms Tuesday afternoon and evening.

The storms may come one after another.

"While thunderstorms will move along at a decent clip, they will be capable of producing very heavy instantaneous rainfall rates, and may exhibit some training motion at times," the weather service said. "Multiple rounds of thunderstorms may be possible at any single location."

Meteorologists encouraged Marylanders to visit weather.gov/safety/flood for flood safety and preparedness information.

Highs are expected to be in the upper 80s to low 90s through at least Monday. There are chances of rain on Wednesday and Monday, but Independence Day weekend looks clear as of now.

Here is the National Weather Service's seven-day forecast for Baltimore/Washington International Thurgood Marshall Airport:

Monday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. High near 92. Southwest wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

Monday Night: Showers and possibly a thunderstorm before 5am, then showers likely. Some of the storms could produce heavy rainfall. Low around 71. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

Wednesday: A chance of showers, with thunderstorms also possible after 11am. Cloudy, then gradually becoming mostly sunny, with a high near 85. North wind 3 to 5 mph. Chance of precipitation is 40%.

Wednesday Night: Partly cloudy, with a low around 69. Calm wind.

Thursday: Sunny, with a high near 89. Northwest wind 5 to 7 mph.

Thursday Night: Mostly clear, with a low around 68.

Friday: Sunny, with a high near 87.

Friday Night: Mostly clear, with a low around 68.

Saturday: Mostly sunny, with a high near 89.

Saturday Night: Mostly cloudy, with a low around 71.

Sunday: Mostly sunny, with a high near 91.

Sunday Night: Partly cloudy, with a low around 74.

Monday: A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 30%.