* WHAT...For the Heat Advisory, heat index values up to 100 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 105 possible.
* WHERE...Southern Piscataquis, Interior Hancock, and Southern Penobscot Counties.
* WHEN...For the Heat Advisory, from 11 AM to 8 PM EDT Wednesday. For the Extreme Heat Watch, from Thursday morning through Thursday evening.
* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.