* WHAT. Heat index values up to 100 in New York and 103 in Pennsylvania expected. * WHERE. Portions of central New York and northeast Pennsylvania, especially in the valleys. * WHEN. From noon to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses, especially for the young and elderly.

* WHAT. Heat index values up to around 100 expected. * WHERE. In New York, Northern Oneida, Yates, Seneca, Southern Cayuga, Onondaga, Steuben, Schuyler, Chemung, Tompkins, Madison, Southern Oneida, Cortland, Chenango, Otsego, Tioga, Broome, Delaware and Sullivan counties. In Pennsylvania, Wyoming, Lackawanna, Luzerne and Pike counties. * WHEN. From noon to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses to occur, especially for the young and elderly.

* WHAT. Dense fog will reduce visibility to 1/4 to 1/2 NM. * WHERE. Coastal waters from Sandy Hook to Little Egg Inlet NJ out 20 nm. * WHEN. Until 2 PM EDT Wednesday. * IMPACTS. Low visibility will make navigation difficult.

* WHAT. Dangerous rip currents expected. * WHERE. Kings (Brooklyn), Southwest Suffolk, Southeast Suffolk, Southern Queens and Southern Nassau Counties. * WHEN. From Wednesday morning through Wednesday evening. * IMPACTS. Life-threatening rip currents are likely for all people entering the surf zone. Anyone visiting the beaches should stay out of the surf. Rip currents can sweep even the best swimmers away from shore into deeper water.

* WHAT. Heat index values up to 99. * WHERE. Northern Fairfield, Northern Middlesex, Northern New Haven, Northern New London, Southern Fairfield, and Southern New Haven Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 102. * WHERE. Northern Westchester, Orange, Putnam, Rockland, and Southern Westchester Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 100. * WHERE. Bronx, Kings (Brooklyn), New York (Manhattan), Northern Queens, Richmond (Staten Island), and Southern Queens Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 99. * WHERE. Northern Nassau, Northwest Suffolk, and Southern Nassau Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 104. * WHERE. Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Western Bergen, Western Essex, Western Passaic, and Western Union Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the Dense Fog Advisory, dense fog will reduce visibility to 1/2 NM or less. For the Small Craft Advisory, south winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 ft expected. * WHERE. Coastal waters from Sandy Hook to Little Egg Inlet NJ out 20 nm. * WHEN. For the Dense Fog Advisory, until 2 PM EDT Wednesday. For the Small Craft Advisory, from 2 PM Wednesday to 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 1/2 NM or less. For the Small Craft Advisory, south winds 15 to 25 kt with gusts up to 30 kt and seas 3 to 5 ft expected. * WHERE. Coastal waters from Sandy Hook to Little Egg Inlet NJ out 20 nm. * WHEN. For the Dense Fog Advisory, until 2 PM EDT Wednesday. For the Small Craft Advisory, from 2 PM Wednesday to 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 1/4 to 1/2 NM. For the Small Craft Advisory, south winds 15 to 20 kt with gusts up to 25 kt and seas 4 to 6 feet expected. * WHERE. Sandy Hook NJ to Fire Island Inlet NY out 20 nm. * WHEN. For the Dense Fog Advisory, until 2 PM EDT Wednesday. For the Small Craft Advisory, from 2 PM Wednesday to noon 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 1/4 to 1/2 NM. For the Small Craft Advisory, south winds 15 to 20 kt with gusts up to 25 kt and seas 4 to 6 feet expected. * WHERE. Sandy Hook NJ to Fire Island Inlet NY out 20 nm. * WHEN. For the Dense Fog Advisory, until 2 PM EDT Wednesday. For the Small Craft Advisory, from 2 PM Wednesday to noon EDT Thursday. * IMPACTS. Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

* WHAT. Dangerously hot conditions with heat index values up to 108. * WHERE. In New Jersey, Hunterdon County. In Pennsylvania, Berks, Upper Bucks, Western Chester, and Western Montgomery Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Dangerously hot conditions with heat index values up to 110. * WHERE. Portions of northern Delaware, central, northern, and southern New Jersey, and southeast Pennsylvania. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Heat index values up to 105. * WHERE. In New Jersey, Morris, Sussex, and Warren Counties. In Pennsylvania, Lehigh and Northampton Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 101. * WHERE. Carbon and Monroe Counties. * WHEN. Until 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the first Heat Advisory, heat index values up to 99. For the second Heat Advisory, heat index values up to 98 expected. * WHERE. In New York, Broome, Chemung, Sullivan, and Tioga Counties. In Pennsylvania, Lackawanna, Luzerne, Pike, and Wyoming Counties. * WHEN. For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from noon to 8 PM EDT Wednesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, Northern New Haven, Northern Middlesex. from 11 AM to 11 PM EDT Tuesday. An Air Quality Action Day means that Ground Level Ozone within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi

The New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties: New York, Bronx, Kings, Queens, Richmond, Westchester, Rockland, Orange, Putnam. from 11 AM to 11 PM EDT Tuesday. Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of Ground Level Ozone. The Air Quality Index, or AQI, was created as an easy way to correlate levels of different pollutants to one scale. The higher the AQI value, the greater the health concern. When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician. A toll free air quality hotline has been established so New York residents can stay informed on the air quality situation. The toll free number is 1 800 5 3 5, 1 3 4 5.

The New Jersey Department of Environmental Protection has issued an Air Quality Action Day for the following counties: Bergen, Passaic, Hudson, Essex, Union. until 11 PM EDT this evening. An Air Quality Action Day means that Ground Level Ozone within the region may approach or exceed unhealthy standards. For additional information, please visit the New Jersey Department of Environmental Protection Web site at http://www.njaqinow.net

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

The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, Northern New Haven, Northern Middlesex. from 11 AM to 11 PM EDT Tuesday. An Air Quality Action Day means that Ground Level Ozone within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi

The New York State Department of Environmental Conservation has issued an Air Quality Health Advisory for the following counties: New York, Bronx, Kings, Queens, Richmond, Westchester, Rockland, Orange, Putnam. from 11 AM to 11 PM EDT Tuesday. Air quality levels in outdoor air are predicted to be greater than an Air Quality Index value of 100 for the pollutant of Ground Level Ozone. The Air Quality Index, or AQI, was created as an easy way to correlate levels of different pollutants to one scale. The higher the AQI value, the greater the health concern. When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician. A toll free air quality hotline has been established so New York residents can stay informed on the air quality situation. The toll free number is 1 800 5 3 5, 1 3 4 5.