SMWLWX The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for. Chesapeake Bay from Pooles Island to Sandy Point MD. Chesapeake Bay north of Pooles Island MD. * Until 330 PM EDT. * At 232 PM EDT, a strong thunderstorm was located near Middle River, moving east at 10 knots. HAZARD. Wind gusts 34 knots or greater. SOURCE. Radar indicated. IMPACT. Boaters in small craft could be thrown overboard by suddenly higher winds and waves capsizing their vessel. * Locations impacted include. Worton Point, Pooles Island, Gunpowder River, and Aberdeen Proving Ground.

* WHAT. South winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Tidal Potomac River from Key Bridge to Smith Point VA, and Chesapeake Bay and adjoining estuaries north of Smith Point VA. * WHEN. Until 5 AM EDT Wednesday. * IMPACTS. Conditions will be hazardous to small craft.

The Maryland Department of the Environment has issued a Code ORANGE Air Quality Alert Tuesday for the Hagerstown area. A Code Orange Air Quality Alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children, people suffering from asthma, heart disease or other lung diseases and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx.