Extreme Heat Warning

* WHAT...For the Heat Advisory, heat index values up to 104. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected.

* WHERE...Interior Waldo, Kennebec, Lincoln, Sagadahoc, and Coastal Cumberland Counties.

* WHEN...For the Heat Advisory, until 8 PM EDT this evening. For the Extreme Heat Warning, from 11 AM to 8 PM EDT Thursday.

* 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.