* WHAT. Heat index values up to 101 expected. * WHERE. Portions of northern Connecticut, central, eastern, northeastern, and western Massachusetts, and northern Rhode Island. * WHEN. From noon Tuesday to 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the Heat Advisory, heat index values up to 100 expected. For the Excessive Heat Watch, dangerously hot conditions with heat index values up to 102 possible. * WHERE. In Connecticut, Hartford CT and Tolland CT Counties. In Massachusetts, Central Middlesex MA, Southeast Middlesex MA, Western Norfolk MA, Western Essex MA, Eastern Franklin MA, Eastern Hampden MA, and Eastern Hampshire MA Counties. * WHEN. For the Heat Advisory, from noon to 7 PM EDT Tuesday. For the Excessive Heat Watch, from Wednesday afternoon through Friday evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT. Heat index values up to 99 expected. * WHERE. In Massachusetts, Eastern Plymouth MA, Northern Bristol MA, and Western Plymouth MA Counties. In Rhode Island, Bristol RI, Eastern Kent RI, Southeast Providence RI, and Western Kent RI Counties. * WHEN. From noon Wednesday to 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 97 expected. * WHERE. In Massachusetts, Eastern Plymouth MA, Northern Bristol MA, and Western Plymouth MA Counties. In Rhode Island, Bristol RI, Eastern Kent RI, Southeast Providence RI, and Western Kent RI Counties. * WHEN. From noon Wednesday to 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 99. * WHERE. Portions of northern Connecticut, central, eastern, northeastern, and western Massachusetts, and northern Rhode Island. * WHEN. Until 7 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. For the first Heat Advisory, heat index values up to 100. For the second Heat Advisory, heat index values up to 102 expected. For the Excessive Heat Watch, dangerously hot conditions with heat index values up to 101 possible. * WHERE. In Connecticut, Hartford CT and Tolland CT Counties. In Massachusetts, Central Middlesex MA, Southeast Middlesex MA, Western Norfolk MA, Western Essex MA, Eastern Franklin MA, Eastern Hampden MA, and Eastern Hampshire MA Counties. * WHEN. For the first Heat Advisory, until 7 PM EDT this evening. For the second Heat Advisory, from 8 AM to 7 PM EDT Wednesday. For the Excessive Heat Watch, from Thursday morning through Friday evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events.