National Weather Service United States Department of Commerce

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

A cluster of strong to severe thunderstorms moving southeast across far northern IL will increase the threat of thunderstorms capable of producing damaging winds and large hail across parts of northeast IL through 500 PM CDT.
Today will start hot and humid with peak heat indices of 100 to locally 110 degrees, hottest south of I-80. This afternoon, a complex of storms may develop in Wisconsin and race southward across the area with a threat for damaging winds. Additional storms may develop tonight, as well. Stay weather aware today!
A hot, humid, and occasionally stormy pattern will continue through early next week before cooler and less humid conditions arrive by mid week.