Showers to decrease in overnight hours Thursday into Friday in Chicago

CHICAGO (CBS) -- Scattered showers continued Thursday evening, but were expected to decrease after midnight.

Other than a few rumbles of thunder and brief downpours, the severe weather risk is expected to remain south of the Chicago area.

In St. Louis , the same storm system that brought rain to the Chicago area packed a punch. After several tornado warnings, strong winds brought down power lines, and damaged homes and buildings.

Unrelated to severe weather, there was also a small earthquake reported in Southern Illinois, close to Mount Vernon.

Windy conditions are in the forecast for Friday, with highs in the mid-50s and gusts around 35 mph.

It will be breezy and partly cloudy for Saturday, with cooler highs in the low 50s. Lows Saturday night will drop into the 30s, with frost possible for areas outside of Chicago.

The next weather system arrives Monday night into Tuesday with additional shower chances.

Forecast:

Thursday night: Evening rain and thunder, then mainly dry overnight. Breezy and turning colder. Low 41.

Friday: Sunny start, then increasing afternoon clouds. Windy and cool. High 57.

Saturday: Partly cloudy, breezy and cooler. High 53.