* WHAT. Flash flooding caused by excessive rainfall is possible. * WHERE. Portions of central, northeast, northern, and southern Maryland, including the following areas, in central Maryland, Anne Arundel. In northeast Maryland, Cecil. In northern Maryland, Southeast Harford and Southern Baltimore. In southern Maryland, Calvert and St. Marys. * WHEN. From 10 AM EDT this morning through this afternoon. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS. - The remnants of Chantal will bring showers and some thunderstorms to locations along the Chesapeake Bay from late morning through the afternoon. There may be embedded slow- moving areas of heavy rain which will be capable of producing rain rates of 2-3 inches in an hour or two. A localized total up to 5 inches is possible. These rain amounts may lead to flash flooding. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.

* WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. Portions of central, northeast, northern, and southern Maryland, including the following areas, in central Maryland, Anne Arundel. In northeast Maryland, Cecil. In northern Maryland, Southeast Harford and Southern Baltimore. In southern Maryland, Calvert and St. Marys. * WHEN. Until 6 PM EDT this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS. - The remnants of Chantal will bring showers and some thunderstorms to locations along the Chesapeake Bay from late morning through the afternoon. There may be embedded slow- moving areas of heavy rain which will be capable of producing rain rates of 2-3 inches in an hour or two. A localized total up to 5 inches is possible. These rain amounts may lead to flash flooding. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.

* WHAT. Heat index values up to 105 expected, up to 107 degrees closer to the Chesapeake Bay. * WHERE. In Maryland, Anne Arundel, Prince Georges, Cecil, Southeast Harford, Southern Baltimore, Calvert, Charles, and St. Marys Counties. In Virginia, King George County. * WHEN. From 1 PM to 7 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.