* WHAT...Dangerously hot conditions with heat index values up to 107 expected.
* WHERE...In Massachusetts, Southern Bristol, Southern Plymouth, Western Franklin, Western Hampden, and Western Hampshire Counties. In Rhode Island, Bristol, Newport, and Washington Counties, except for Block Island.
* WHEN...From 10 AM Wednesday to 8 PM EDT Saturday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.