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 inches
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.