* WHAT. Dense fog will reduce visibility to less than 1 NM. * WHERE. Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN. Until noon EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. Dense fog will reduce visibility to 1/4 NM or less. * WHERE. Portions of Atlantic coastal waters and Delaware Bay Waters. * WHEN. From 11 PM this evening to 10 AM EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. Dense fog will reduce visibility to 1 NM or less. * WHERE. Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm. * WHEN. Until 10 AM EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

Fog will continue to develop through the early morning hours with some of it becoming dense, reducing visibilities to a quarter mile or less. Locations right along the immediate coast will be more likely to experience dense fog. Motorists should be prepared for quickly changing visibilities. Slow down, allow for extra space between vehicles and use your low beam headlights in the fog. A Dense Fog Advisory may be needed should the dense fog become widespread.

* WHAT. Dense fog will reduce visibility to 1 NM or less. * WHERE. Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm and Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm. * WHEN. Until 10 AM EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. Dense fog will reduce visibility to less than 1 NM. * WHERE. Fire Island Inlet NY to Montauk Point NY out 20 nm. * WHEN. Until noon EDT Monday. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. Heat index values of 95 to 100 expected on Monday, and around 100 on Tuesday. * WHERE. Northern Westchester, Orange, Putnam, Rockland, and Southern Westchester Counties. * WHEN. From noon Monday to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. The highest heat index values will be generally in the afternoon and early evening hours.

* WHAT. Heat index values of 95 to 100 expected * WHERE. Bronx, Kings (Brooklyn), New York (Manhattan), Northern Queens, Richmond (Staten Island), and Southern Queens Counties. * WHEN. From noon Monday to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. The highest heat index values will be generally in the afternoon and early evening hours.

* WHAT. Heat index values of 95 to 100 expected on Monday, and around 100 on Tuesday. * WHERE. Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic, and Western Union Counties. * WHEN. From noon Monday to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. The highest heat index values will be generally in the afternoon and early evening hours.

* WHAT. Heat index values of 95 to 100 expected. * WHERE. In Connecticut, Northern Fairfield, Northern Middlesex, Northern New Haven, Northern New London, Southern Fairfield, and Southern New Haven Counties. In New York, Northern Nassau and Northwest Suffolk Counties. * WHEN. From noon Monday to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. The highest heat index values will be generally in the afternoon and early evening hours.

* WHAT. Heat index values up to 104 expected. * WHERE. Portions of northern Delaware, most of New Jersey, and southeast Pennsylvania. * WHEN. From 10 AM Monday to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Peak heat indices on Wednesday are forecast to reach or exceed 100 degrees, and therefore an extension of this heat advisory into Wednesday is probable.

* WHAT. Heat index values up to 102 expected. * WHERE. In New Jersey, Morris, Sussex, Warren, and Hunterdon Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN. From 10 AM Monday to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS. Peak heat indices on Wednesday are forecast to reach or exceed 100 degrees, and therefore an extension of this heat advisory into Wednesday is probable.