Timeline: Tropical Storm Isaias brings heavy rains, winds to Maryland on its way up East Coast

We’re tracking Tropical Storm Isaias as it dumps a deluge of rain across Maryland Tuesday, flooding roads and prompting the National Weather Service to issue warnings for much of the East Coast.

Here’s a timeline of the storm’s effects in the region, as it makes its way up the Interstate 95 corridor.


-- 11 p.m. Monday: Isaias made landfall on the shores of North and South Carolina, as a tropical storm, dousing Ocean Isle Beach, N.C., with heavy rain and sustained winds of up to 85 mph.

-- 6:46 a.m. Tuesday: A tornado touched down in Callaway, Maryland, in St. Mary’s County, and multiple trees were falling on cars in the area, according to a trained National Weather Service spotter.


-- 8:12 a.m. Tuesday: The St. Mary’s County Department of Emergency Services asked to stay home and refrain from all travel. The agency warned of “multiple road closures due to flooding throughout the County.”

-- 8:30 a.m. Tuesday: Minor flooding was spotted in Fells Point and other low-lying areas in Baltimore as the storm approached. Residents have been warned to expect flooding, power outages and possible damage from high winds and fallen trees across the area.

-- 8:41 a.m. Tuesday: The tropical storm was generating 70 mph winds about 110 miles south of Baltimore as it moved to the north and northeast past Richmond, Virginia, according to the weather service.

-- 9:41 a.m. Tuesday: A weather buoy in the water near Point Lookout, the southernmost tip of St. Mary’s County, reported 68 mph wind gusts from the storm.

-- 10 a.m. Tuesday: The National Hurricane Center provides an update on the storm’s position, near Tilghman Island: “Strong winds ... heavy rainfall ... and tornadoes occurring over Eastern Maryland and the Delmarva Peninsula will spread northward along the Mid-Atlantic coast today ...”

-- 11 a.m. Tuesday: A tropical storm warning is in effect Tuesday for the Chesapeake Bay in Maryland, along with much of the East Coast, from Duck, N.C., to Eastport, Maine, according to the National Hurricane Center.

“Heavy rainfall along the East Coast, near the path of Isaias, will result in flash flooding, some of which may be significant in the mid-Atlantic and Northeast through tonight,” the National Hurricane Center advised. “Potentially life-threatening urban flooding remains possible in Philadelphia and elsewhere along and just west of the I-95 corridor today.”

-- 11:34 a.m. Tuesday: A flash flood watch is in effect until 11 p.m. for much of Central Maryland, including Anne Arundel County; central, southeast and northwest Howard County; Carroll County; northern Baltimore County; northwest and southeast Harford County; and southern Baltimore, according to the weather service.


“Rainfall associated with Tropical Storm Isaias will continue over the next hour or two, before ending early this afternoon,” the weather service said. “Rainfall amounts of 3-6 inches have fallen across the area, with additional rainfall amounts of up to an inch expected through the end of the event. ...

“This amount of rain is likely to result in significant flash flooding of small streams and creeks Monday night into Tuesday evening.”

The Associated Press contributed to this article.