What: Heat index values up to 100 expected.
Where: In Massachusetts, Barnstable MA, Southern Bristol MA, and Southern Plymouth MA Counties. In Rhode Island, Bristol RI, Newport RI, and Washington RI Counties.
When: From 11 AM this morning to 8 PM EDT this evening.
Impacts: Hot temperatures and high humidity may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.