SMWLWX The National Weather Service in Sterling Virginia has issued a * Special Marine Warning for. Chesapeake Bay from North Beach to Drum Point MD. Chesapeake Bay from Sandy Point to North Beach MD. Choptank River to Cambridge MD and the Little Choptank River. Eastern Bay. * Until 730 PM EDT. * At 625 PM EDT, a strong thunderstorm was located over Choptank River, moving east at 20 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. Choptank River, Miles River, Knapps Narrows Bridge, Tilghman Island, Blackwalnut Point, Bloody Point Light, Poplar Island, and Shady Side.

* WHAT. Dangerous rip currents. * WHERE. Eastern Monmouth, Atlantic Coastal Cape May, Coastal Atlantic and Coastal Ocean. * WHEN. Until 8 PM EDT this evening. * IMPACTS. Rip currents can sweep even the best swimmers away from shore into deeper water.

* WHAT. Heat index values up to 102. * WHERE. Portions of northern Delaware, New Jersey, and southeast Pennsylvania. * WHEN. Until 9 PM EDT this evening. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the Dense Fog Advisory, dense fog will reduce visibility to 1 NM or less. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 ft. * WHERE. Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm, Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm and Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm. * WHEN. For the Dense Fog Advisory, until 10 PM EDT this evening. For the Small Craft Advisory, until 6 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

* WHAT. For the Dense Fog Advisory, dense fog will reduce visibility to 1 NM or less. For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 ft. * WHERE. Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm, Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm and Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm. * WHEN. For the Dense Fog Advisory, until 10 PM EDT this evening. For the Small Craft Advisory, until 6 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

* WHAT. South winds 15 to 20 kt with gusts up to 25 kt. * WHERE. Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm and Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm. * WHEN. Until 11 PM EDT this evening. * IMPACTS. Conditions will be hazardous to small craft.

The Maryland Department of the Environment has issued a Code Orange Air Quality Action Day for Ground Level Ozone, until midnight EDT tonight. An Air Quality Alert means that air quality within the region may approach or exceed unhealthy standards. For more information on ground-level ozone and fine particulates, visit http://www.mde.maryland.gov/programs/air.

The New Jersey Department of Environmental Protection has issued a Code Orange Air Quality Action Day for Ground Level Ozone, until 11 PM EDT this evening. An Air Quality Advisory means that air quality within the region may approach or exceed unhealthy standards. For more information on current and forecast concentrations of ground-level ozone and fine particulates, visit www.airnow.gov or www.state.nj.us/dep/airmon/ or call the New Jersey Bureau of Air Monitoring at 609-292-0138

* WHAT. For Small Craft Advisory, south winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE. Chesapeake Bay north of Pooles Island MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, Eastern Bay, Choptank River to Cambridge MD and the Little Choptank River, Patuxent River to Broomes Island MD and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. For the Small Craft Advisory, from noon Today to 1 AM EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft.

The Maryland Department of the Environment has issued a Code Orange Air Quality Action Day for Ground Level Ozone, until midnight EDT Wednesday night. An Air Quality Alert means that air quality within the region may approach or exceed unhealthy standards. For more information on ground-level ozone and fine particulates, visit http://www.mde.maryland.gov/programs/air.

The Maryland Department of the Environment has issued a Code ORANGE Air Quality Alert Wednesday for Northeast Maryland. 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.