Scattered showers, thunderstorms with possible 40 mph wind gusts, flooding
The periods of storms will run from Saturday evening into the overnight hours, Meteorologist David Yeomans said.
Why do the leaves change color in fall?
As the long, warm days of summer transition to a darker, cooler winter, leaves across much of the country put on a dazzling display of colors. But why?
Chicago area artist combines art and science to create Environmental Graphiti
A Chicago area artist combines art and science in a dazzling way, and CBS News Chicago meteorologist David Yeomans even tried his hand at it as he checked out Environmental Graphiti.
What causes turbulence?
Turbulence experienced by aircraft can turn a smooth flight into a bumpy one – and even have dangerous consequences. And it is all caused by the movement of air in the atmosphere.
Parts of Chicago record a month's worth of rain in 24 hours this week
Much of Chicago recorded a month's worth of rainfall in 24 hours this week, with storm totals of 3 to 5 inches of rain common across central Cook County.
Why do hurricanes turn?
Hurricanes are the most powerful storms on Earth, but are often steered around the globe by just a gentle breeze.
What are straight-line winds, and how are they different from derechos?
If you have broken tree limbs, roof damage, or lost power during a thunderstorm, you may think your house was hit by a tornado. But the far more likely culprit is thunderstorm wind damage, often called straight-line winds.
Chicago hit by 1,000-year and 500-year rain events less than 3 weeks apart
The torrential rainfall that pounded parts of Chicago on July 25 was so extreme, it typically occurs only once every 1,000 years, according to the National Weather Service.
Canadian wildfire smoke brings worst air quality in world to Chicago
The hazy skies in the Chicago area are the visible sign of the poor air quality on Thursday as smoke from Canadian wildfires sent Chicago to the top of the list of most polluted cities in the world.
Extreme rain becoming more common in Chicago area as climate warms
Extreme rainfall events in Chicago, including two observed this summer, are becoming more common as the climate warms.
Flash flooding reported to the south from storms racing through area
Flash flooding has been reported in Kankakee County and Northwest Indiana as storms with heavy rainfall moved through the Chicago area Wednesday.
What is a Beach Hazards Statement?
What is a Beach Hazards Statement? These warnings are issued by the National Weather Service for dangerous swimming conditions at Chicago beaches along Lake Michigan.
Storms with heavy rains flood Chicago area streets and homes
Chicago residents are cleaning up after strong storms with hard rains caused flash flooding Friday, especially on the South Side.
Fast-moving storms knock trees onto houses, cut power
A line of fast-moving storms prompted severe thunderstorm warnings in the Chicago area and ground stops at O'Hare and Midway airports. There were also reports of storm damage.
What is the heat index and how is it calculated?
How is the heat index calculated, and why is it more important than the air temperature during some heat waves?