* 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. 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.

* WHAT. South winds 10 to 20 kt with gusts up to 25 kt and seas 4 to 6 feet expected. * WHERE. In Massachusetts coastal waters, Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island. * WHEN. From 9 PM Monday to 5 AM EDT Wednesday. * IMPACTS. Conditions will be hazardous to small craft.

* 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 Monday to 11 AM EDT Tuesday. * IMPACTS. Conditions will be hazardous to small craft.