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March 13, 2010

Arundel sees most rain overnight

This storm isn't over yet, but rain tallies overnight show that Anne Arundel County has received most of the rain so far. The only station reporting totals higher than Arundel's this morning was Thurmont, with 1.75 inches by 8 a.m. The totals were gathered by CoCoRaHS.

Also, the flood gauges so far show most rivers and streams in Maryland have not yet reached flood stage, although much of the runoff is not expected to reach the larger rivers until late today or tomorrow. You can follow the river flooding here. The chart below shows that water levels on the Potomac at Wisconsin Avenue in Washington have already climbed within a few inches of flood stage.

Here are some samples of the rain totals reported by this morning. The differences across the region are sharp. Where northern Arundel reported well over an inch, Towson saw barely a half-inch. Here on the WeatherDeck in Cockeysville, we've recorded less than three-quarters of an inch. NWS forecasters seem to be dialing back on their more dire rain forecasts of Friday afternoon.

Thurmont, Frederick Co.:  1.75 inchesNOAA Wisconsin Ave. flood gauge

Severn, Anne Arundel:  1.68 inches  

Severna Park, Arundel:  1.29 inches

Leonardtown, St. Mary's:  1.11 inches

Salisbury, Wicomico:  1.01 inches

Ellicott City, Howard:  0.94 inch

Columbia, Howard:  .81 inch

Sykesville, Howard:  0.66 inch

Towson, Baltimore Co.:  0.59 inch

In the meantime, Flood Warnings have been posted for Garrett, Allegany and Frederick Counties as snowmelt and rain push small streams and creeks over their banks. Waters are expected to continue to rise into Sunday.

UPDATE 11 a.m.: Flood Warnings have been extended to Baltimore County and City, northern Anne Arundel County, Howard and Carroll counties.

Posted by Frank Roylance at 8:53 AM | | Comments (0)
Categories: By the numbers

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About Frank Roylance
This site is the Maryland Weather archive. The current Maryland Weather blog can be found here.
Frank Roylance is a reporter for The Baltimore Sun. He came to Baltimore from New Bedford, Mass. in 1980 to join the old Evening Sun. He moved to the morning Sun when the papers merged in 1992, and has spent most of his time since covering science, including astronomy and the weather. One of The Baltimore Sun's first online Web logs, the Weather Blog debuted in October 2004. In June 2006 Frank also began writing comments on local weather and stargazing for The Baltimore Sun's print Weather Page. Frank also answers readers’ weather queries for the newspaper and the blog. Frank Roylance retired in October 2011. Maryland Weather is now being updated by members of The Baltimore Sun staff

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