What is El Nino? And what does it mean?
We could be witnessing the strongest El Niño on record, and it's altering weather worldwide.
Will El Niño make it rain on Super Bowl 50?
The Super Bowl has seen a variety of weather — good and bad — over the years. How will this year shape up?
Tornadoes in February? Not that uncommon
Is it common to see tornadoes in February like we did on Groundhog Day?
WATCH: Groundhog day has a weird history
Why do we put so much stock in an overgrown rodent's forecast?