Heat advisory issued for all of southeast Wisconsin with feels like temps above 100
The heat is here! The high on Monday reached 94* which was just 5* away from the record of 99*. Tuesday is expected to be even warmer with highs in the upper 90s! The current record for Tuesday is 101* set in 1988.
The biggest change from Monday to Tuesday will be the emergence of humidity. Peak dew points on Monday hit the mid 60s which was enough to feel sticky but not overly humid. Tuesday's peak dew points will reach the low 70s putting it in the tropical category. That nasty stickiness will be fairly brief as a weak cold front Tuesday evening drops the dew points down around 60* for Wednesday and Thursday.
The combination of heat and humidity will push heat indices (feels like temps) well into the 100s. Some locations could get as high as 107* for what it feels like Tuesday afternoon.
The triple digit heat indices has pushed the National Weather Service to issue a heat advisory for all of southeast Wisconsin on Tuesday from noon until 7 PM. Make sure to take plenty of breaks from the heat in the shade or the air conditioning and drink plenty of water. Check on neighbors without AC or elderly folks. Libraries and malls are great places to go to beat the heat.
The weak cold front that arrives Tuesday evening could spark a few showers or storms. Most of southeast Wisconsin probably stays dry but a few communities could get a brief shower or storm. Because of all the heat of the day any storms that could form could be on the stronger side. All of southeast Wisconsin is in the Level 1 Marginal risk for severe weather. Some gusty wind or small hail may be possible in any storms that form.
The arrival of potentially the hottest day of the year comes as we start a new season. Summer officially began Tuesday morning with the summer solstice at 4:13 a.m. It is the longest daylight day of the year with exactly 15 hours 21 minutes and 28 seconds of daylight from the sunrise at 5:12 a.m. to the sunset at 8:34 a.m. There will be little change in our total daylight for the next two weeks before we start to see our daylight time decrease.
Download the CBS 58 Ready Weather app to track the hot temperatures!