The floodwalls have gone up at the Georgetown Harbour, which has flooded before.
What's left of Tropical Storm Andrea has already dumpled between one and two inches of rain on the region, and weather forecasters say that we could expect to see a total of between three and six inches before the storm blows over. A flash flood advisory is in effect until 10 p.m. tonight.
In southwestern Anne Arundel County and eastern Prince George's County, the advisory has been upgraded to a warning through 9:15 p.m.
Down by the Georgetown Harbour, workers have prepared by raising floodwalls around the complex, even though the Potomac is still running four feet below the boardwalk. They don't want a repeat of April 2011, when the floodwalls were not installed and the complex was flooded, requiring millions of dollars worth of repairs and renovations.
Drivers are cautioned not to drive into standing water as flood waters are usually deeper than they appear.