* WHAT. Highest gusts up to 25 kts from the south and highest waves around 4 feet expected. * WHERE. Sturgeon Pt to Alabaster MI. * WHEN. Until 2 AM EDT Monday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Dangerously hot conditions with heat index values up to 100 possible. * WHERE. Portions of central, south central, southwest, and west central Michigan. * WHEN. From Monday afternoon through Friday evening. * IMPACTS. Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT. Highest gusts up to 25 kts from the southeast and highest waves around 4 feet. * WHERE. St Ignace to False Detour Channel, Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary and Sturgeon Pt to Alabaster MI. * WHEN. Until 2 AM EDT Monday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Dangerously hot conditions for several days are expected. Peak afternoon heat indices around 100 degrees are likely each day from Monday through Friday. * WHERE. Southeast Michigan. * WHEN. From Monday afternoon through Friday evening. * IMPACTS. Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS. The effects of heat on the human body get worse as the number of consecutive days of heat increase. Nighttime lows will only drop into the 70s this week, which will offer just modest relief from the heat. In addition, highs in the lower 90s may persist into the weekend.