* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110. For the Heat Advisory, heat index values up to 104 expected.
* WHERE...Coastal Waldo, Interior Waldo, Kennebec, Knox, Lincoln, Sagadahoc, and Coastal Cumberland Counties.
* WHEN...For the Extreme Heat Warning, until 8 PM EDT this evening. For the Heat Advisory, from 8 PM this evening to 8 PM EDT Friday.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Overnight low temperatures will only fall into the 70s, resulting in accumulated heat stress.