Baltimore City Department of Public Works Director Rudolph S. Chow, P.E., today reminds citizens to stay alert to the possible heavy rain predicted to reach the region this evening. The National Weather Service has issued a flash flood watch from 6:00 p.m. today until 8:00 a.m. Friday. Widespread rainfall amounts of 3 to 6 inches are expected, with localized spots potentially getting up to a foot of rain.