* WHAT. Visibility one quarter mile or less in dense fog. * WHERE. In Connecticut, Southern Fairfield, Southern Middlesex, Southern New Haven, and Southern New London Counties. In New York, Northeast Suffolk, Northern Nassau, Northwest Suffolk, Southeast Suffolk, Southern Nassau, and Southwest Suffolk Counties. * WHEN. Until 9 AM EDT this morning. * IMPACTS. Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS. A portion of the advisory may need to be extended later into the morning if fog is slower to improve.

Areas of fog may reduce visibilities to a mile or less through 9 am. Patchy dense fog is also possible. Travelers should be prepared for quickly changing visibilities. Slow down and use your low beams in the fog. Visibilities are expected to improve after 9 am.

* WHAT. Visibility one quarter mile or less in dense fog. * WHERE. Southern Fairfield, Southern Middlesex, Southern New Haven, and Southern New London Counties. * WHEN. Until 9 AM EDT this morning. * IMPACTS. Low visibility could make driving conditions hazardous.

* WHAT. Dense fog will reduce visibility to 1 NM or less. * WHERE. New York Harbor, including Raritan Bay and Sandy Hook Bay, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN. Until 10 AM EDT this morning. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. Dense fog will reduce visibility to 1 NM or less. * WHERE. Long Island Sound, and Peconic and Gardiners Bays. * WHEN. Until 10 AM EDT this morning. * IMPACTS. Low visibility will make navigation difficult. * ADDITIONAL DETAILS. The advisory may need to be extended into the afternoon.