Extreme Heat Watch

* WHAT...Dangerously hot conditions with heat index values exceeding 105.

* WHERE...All of southeast Michigan.

* WHEN...From Tuesday afternoon through Thursday evening.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Heat and humidity build into the region on Monday with heat index values approaching or touching 100 degrees for a short period. The hottest conditions are expected to be Tuesday through at least Thursday. This multi-day stretch will see high temperatures in the mid to upper 90s and possibly 100 degrees across the Detroit metro urban areas. Dewpoints into the low to mid 70s bring heat index values to around 105 degrees or greater each day. Little relief overnight with low temperatures each night in the low to mid 70s.