Showers, thunderstorms expected much of the night.
A line of showers and thunderstorms will be moving across the metro area this evening. Locally heavy downpours will occur with stronger cells, but the threat of severe weather is diminished.
At 8:30 PM, this line extended from northern Cook county, through eastern LaSalle county, and will be moving across the city proper between 930 and 1030 PM.
To the west, more widespread showers, with scattered embedded thunderstorms extended across much of northwest and west central Illinois. This activity will also be moving eastward across the area late this evening.
The rain will end with a cold frontal passage during the overnight and pre-dawn hours.