* WHAT. Dense fog will reduce visibility to 1 nm or less. * WHERE. Sandy Hook NJ to Montauk Point NY out 20 nm, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN. Until 10 AM EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. Dense fog will reduce visibility to to less than 1 NM. * WHERE. Sandy Hook NJ to Montauk Point NY out 20 nm, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN. Until 10 AM EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

* 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 Monday. * IMPACTS. Low visibility could make driving conditions hazardous.

* WHAT. Dense fog will reduce visibility to 1 NM or less. * WHERE. Sandy Hook NJ to Montauk Point NY out 20 nm, New York Harbor, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN. Until 10 AM EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. South winds 10 to 20 kt with gusts up to 25 kt and seas 3 to 5 feet expected. * WHERE. In Massachusetts coastal waters, Nantucket Sound and Vineyard Sound. In Rhode Island coastal waters, Rhode Island Sound and Block Island Sound. * WHEN. From 9 PM this evening to 11 AM EDT Tuesday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. For the Dense Fog Advisory, dense fog will reduce visibility to 1 NM or less. For the Small Craft Advisory, south winds 10 to 20 kt with gusts up to 25 kt and seas around 5 feet expected. * WHERE. Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN. For the Dense Fog Advisory, until 10 AM EDT this morning. For the Small Craft Advisory, from 6 PM this evening to 6 AM EDT Tuesday. * IMPACTS. Conditions will be hazardous to small craft. Low visibility will make navigation difficult. * ADDITIONAL DETAILS. The dense fog advisory may need to be extended into the afternoon.

* WHAT. For the Dense Fog Advisory, dense fog will reduce visibility to 1 NM or less. For the Small Craft Advisory, south winds 10 to 20 kt with gusts up to 25 kt and seas around 5 feet expected. * WHERE. Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN. For the Dense Fog Advisory, until 10 AM EDT this morning. For the Small Craft Advisory, from 6 PM this evening to 6 AM EDT Tuesday. * IMPACTS. Conditions will be hazardous to small craft. Low visibility will make navigation difficult. * ADDITIONAL DETAILS. The dense fog advisory may need to be extended into the afternoon.

* 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.

* WHAT. Visibility one quarter mile or less in dense fog. * WHERE. Portions of southeastern Massachusetts and Rhode Island. * WHEN. Until 8 AM EDT this morning. * IMPACTS. Low visibility could make driving conditions hazardous.

Fog will continue to develop tonight reducing visibilities to less than a mile through early Sunday morning. Patchy dense fog is also expected with visibilities less than a quarter mile at times. Travelers should be prepared for quickly changing visibilities. Slow down and use your low beams in the fog.

Widespread fog will reduce visibilities to less than a mile through early Sunday morning. Patchy dense fog is also expected with visibilities less than a quarter mile at times. Travelers should be prepared for quickly changing visibilities. Slow down and use your low beams in the fog.