Overnight Flood Watch In Effect For Montgomery County: NWS

MONTGOMERY COUNTY, MD — A flood watch was issued by the National Weather Service on Tuesday for Montgomery County ahead of isolated thunderstorms.

The NWS notice is in effect from late Tuesday through Wednesday morning.

Forecasters warn storms could produce isolated rainfall totals ranging between 2 and 4 inches in a span of about two hours.

"Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations," reads the advisory.

"Showers are likely with isolated thunderstorms late tonight into Wednesday morning as a warm front lifts through the area."

Related: Chance Of Storms Throughout Weekend In MD: See Latest Forecast

The storms are expected to hit the central and southeast portions of the county, including areas such as Rockville, Olney, Chevy Chase and Silver Spring.

The majority of Maryland remains under a hazardous weather outlook, with officials warning that scattered thunderstorms are possible Thursday through Saturday in the afternoon and evening. Damaging wind gusts remain a threat, according to officials.

Detailed Forecast For Baltimore Region

Tuesday Night: A chance of showers and thunderstorms, mainly after 5 a.m. Mostly cloudy, with a low around 70. East wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.

Wednesday: Showers and thunderstorms likely before 2 p.m., then showers likely and possibly a thunderstorm between 2 p.m and 5 p.m, then a chance of showers and thunderstorms after 5 p.m. Patchy fog between 9 a.m and 11 a.m. Otherwise, mostly cloudy, with a high near 85. Light and variable wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: A chance of showers and thunderstorms, mainly before 7 p.m. Partly cloudy, with a low around 73. Southeast wind 3 to 5 mph. Chance of precipitation is 30%.

Thursday: A chance of showers and thunderstorms after 2 p.m. Increasing clouds, with a high near 91. Heat index values as high as 102. South wind 6 to 10 mph. Chance of precipitation is 30%.

Thursday Night: A chance of showers and thunderstorms before 11 p.m., then a chance of showers between 11 p.m. and 2 a.m. Partly cloudy, with a low around 74. Southwest wind 3 to 7 mph. Chance of precipitation is 40%.

Friday: A chance of showers and thunderstorms after 2 p.m. Mostly sunny, with a high near 91. Chance of precipitation is 50%.

Friday Night: A chance of showers and thunderstorms before 2 a.m. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.

Saturday: A chance of showers and thunderstorms after 2 p.m. Partly sunny, with a high near 90. Chance of precipitation is 50%.

Saturday Night: A chance of showers and thunderstorms before 2 a.m. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.

Sunday: Mostly sunny, with a high near 90.

Sunday Night: Partly cloudy, with a low around 73.

Monday: Mostly sunny, with a high near 93.

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

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