Southwest braces for Priscilla
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Priscilla has been downgraded from a hurricane to a tropical storm, but several southwestern states are still bracing for major flooding.

Chicago weather: Spotty showers today, sunshine arrives this weekend

Tomorrow will be mostly sunny with highs in the mid-60s. Sunday will be slightly warmer with highs around 70 under sunshine!

Here's what the arrival of La Niña means for your winter weather

La Niña has returned for a second consecutive go-around this autumn and winter, and it could have a noticeable influence on seasonal weather patterns.

Chicago weather: Cool start gives way to sunny 60s today

Cool mornings and sunny afternoons lead into a mild weekend for Chicago, with 70s returning on Columbus Day.

Chicago weather: Coolest day since May ends warm streak

Chicago cools off today with a high near 62°, ending a four-week warm streak before a sunny weekend warming trend.

How new research led to North Dakota tornado's EF5 upgrade

A powerful tornado struck Enderlin, North Dakota, on June 20, causing significant damage and leading to a rare EF5 classification after new research. Here's what went into the new research that led to the upgraded classification.