Tuesday rainfall totals top 2 inches in some areas

Heavy rains dropped more than 1.5 inches on parts of Howard, Carroll and Baltimore counties Tuesday, prompting flood warnings.

The heaviest rains fell to the northwest of the Interstate 95 corridor, along a stretch from western Montgomery County to the northwestern tip of Harford. Most areas west of I-95  received at least half an inch of rain, with more than an inch over a wide swath and 1.5 to 2 inches in isolated areas, according to radar estimates.

The National Weather Service issued flood warnings for urban areas and streams in Howard, Carroll, Baltimore and Montgomery counties at 12:37 p.m. through 3:30 p.m. Flooding closed some roads in Montgomery, according to the warning.

More than 2 inches had fallen in some areas, according to the warning, with another inch possible through the afternoon.

Drivers are encouraged to take caution, as most flooding deaths occur in automobiles. Do not drive through deep or flowing floodwaters.

Radar estimates show the wettest areas, receiving at least 1.5 inches, including the Glenwood area of western Howard County, in Baltimore County along the Butler Road corridor from Reisterstown to Sparks and east of Interstate 83 near Parkton and White Hall.

Former Sun weather blogger Frank Roylance reported 1.41 inches in Cockeysville as of about 12:30 p.m., with rainfall rates reaching 4.09 inches per hour briefly.

Rainfall totals have been lower at other measuring points, with 0.71 inches at the Maryland Science Center and 0.53 inches at BWI Marshall Airport

At the Sun weather station on Centre Street, 0.67 inches fell.

Send your own rain gauge totals to The Sun at sdance@baltsun.com or on Twitter at @MdWeather.

The Baltimore/Washington office of the National Weather Service is forecasting a 90 percent chance of showers Tuesday night and overnight, though rainfall totals are expected to be scant.

Have a weather question? E-mail me at sdance@baltsun.com or tweet to @MdWeather.

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