Heat wave in Southeast Michigan. What you need to know about the high temperatures this week.

(CBS DETROIT) – Southeast Michigan will experience a heat wave all weekwith temperatures expected to reach the mid-nineties.

According to the National Weather Service, a heat wave occurs when temperatures reach at least 90 degrees each day for three consecutive days. The last time Metro Detroit had a heat wave of four consecutive days with temperatures of 35 degrees or more was July 1-4, 2002.

In response, the NEXT Weather team has declared Monday through Friday as alert days due to the heat. Here you can read what you need to know every day about temperatures and weather conditions.

Monday June 17

Today is the first of a five-day heat wave. It’s already a bull’s-eye with extreme heat warnings for Oakland, Macomb and Wayne counties and a heat advisory in effect for the rest of Southeast Michigan. Both the warning and advice last until 8 p.m. Friday. Excessive heat warnings mean the heat index will reach 105 degrees or more for three consecutive hours or more in a 12-hour period. A heat advisory means the heat index is expected to be above 100 degrees for three hours or more.

The heat-related health risk is also high this week. We are currently in category 3 (Red), which is a high risk. This affects anyone without effective cooling and hydration and those in heat-sensitive industries.

Heat hazards can be very serious, ranging from heat exhaustion to heat stroke. If you start to feel any of the symptoms of heat exhaustion, such as fainting or dizziness, muscle cramps, or a rapid, weak pulse, go to a cool place, drink water, and rest. If you are not sweating, have a throbbing headache, a rapid, strong pulse, and red, hot, dry skin, call 911.

In addition to the heat, there is also an air quality advisory for elevated ozone levels. The advisory is in effect today for Wayne, Washtenaw, Macomb, Monroe, Oakland, Livingston and St. Clair counties. Limiting the fueling of vehicles, the use of charcoal maids and the use of gas-powered lawn equipment helps limit the ozone layer.

Sunshine is expected for the rest of the day, but there is a chance of showers or thunderstorms this afternoon and evening. Some of these storms could become strong to severe, bringing the potential for heavy rainfall, wind gusts up to 60 miles per hour, and half-inch hail. The heat and humidity will continue for the rest of today and tonight. Expect highs Monday as high as 94 degrees with dew points in the upper 60s and the heat index as high as 105 degrees. Overnight lows will only dip into the low to mid 70s, with the chance of showers and storms dissipating after 1 a.m., but leaving us with partly cloudy skies and muggy conditions as dew points will hover around 70 degrees.