* WHAT. Heat index values up to 97 expected. * WHERE. In Connecticut, Hartford CT, Tolland CT, and Windham CT Counties. In Massachusetts, Southern Worcester MA, Central Middlesex MA, Western Norfolk MA, Northern Bristol MA, and Western Plymouth MA Counties. In Rhode Island, Northwest Providence RI and Southeast Providence RI Counties. * WHEN. From noon Monday to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 96 expected. * WHERE. In Massachusetts, Eastern Hampden MA County. In Rhode Island, Eastern Kent RI and Western Kent RI Counties. * WHEN. From noon today to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 97 expected. * WHERE. In Connecticut, Hartford CT, Tolland CT, and Windham CT Counties. In Massachusetts, Southern Worcester MA, Central Middlesex MA, Western Norfolk MA, Northern Bristol MA, and Western Plymouth MA Counties. In Rhode Island, Northwest Providence RI and Southeast Providence RI Counties. * WHEN. From noon today to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* 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 98 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 today to 8 PM EDT Tuesday. * IMPACTS. High temperatures and high humidity may cause heat illnesses.

* WHAT. For the Dense Fog Advisory, visibility less than one mile in dense fog. For the Heat Advisory, heat index values up to 97 expected. * WHERE. In Massachusetts, Northern Bristol MA and Western Plymouth MA Counties. In Rhode Island, Eastern Kent RI, Northwest Providence RI, Southeast Providence RI, and Western Kent RI Counties. * WHEN. For the Dense Fog Advisory, until 8 AM EDT this morning. For the Heat Advisory, from noon today to 8 PM EDT Tuesday. * IMPACTS. Low visibility could make driving conditions hazardous. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the Dense Fog Advisory, visibility less than one mile in dense fog. For the Heat Advisory, heat index values up to 97 expected. * WHERE. In Massachusetts, Northern Bristol MA and Western Plymouth MA Counties. In Rhode Island, Eastern Kent RI, Northwest Providence RI, Southeast Providence RI, and Western Kent RI Counties. * WHEN. For the Dense Fog Advisory, until 8 AM EDT this morning. For the Heat Advisory, from noon today to 8 PM EDT Tuesday. * IMPACTS. Low visibility could make driving conditions hazardous. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 96 expected. * WHERE. In Connecticut, Hartford CT, Tolland CT, and Windham CT Counties. In Massachusetts, Southern Worcester MA, Central Middlesex MA, Western Norfolk MA, and Eastern Hampden MA Counties. * WHEN. From noon today to 8 PM EDT Tuesday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Visibility one quarter mile or less in dense fog. * WHERE. In Massachusetts, Eastern Plymouth MA, Southern Bristol MA, and Southern Plymouth MA Counties. In Rhode Island, Bristol RI, Newport RI, and Washington RI Counties. * WHEN. Until 8 AM EDT this morning. * IMPACTS. Low visibility could make driving conditions hazardous.

* WHAT. Visibility one quarter mile or less in dense fog. * WHERE. In Massachusetts, Barnstable MA, Dukes MA, and Nantucket MA Counties. In Rhode Island, Block Island RI. * WHEN. Until noon EDT today. * IMPACTS. Low visibility could make driving conditions hazardous.