Our run of dry weather is on borrowed time.
Scattered showers and thunderstorms are due into the area Friday evening, but the thunderstorms which sweep the area in clusters Saturday may be formidable.
An influx of tropical moisture tangles with the summer's unseasonably strong and southward-displaced jet stream, a combination which threatens to spin up waves of active thunderstorms capable of downpours and strong winds.
The area is outlooked Saturday and Saturday night by the Storm Prediction Center for possible severe weather.
For the latest weather updates, go to ChicagoWeatherCenter.com.