A decade ago, startups raising money to launch commercial weather satellites were convinced they had a goldmine on their ...

At 4:30 p.m. Thanks mainly to keener instruments and more powerful ... in the atmosphere can produce radical changes in weather, the perfect forecast is tantalizingly elusive.

While Groundhog Day remains a fun tradition, meteorologists rely on data and computer models for more accurate forecasts. This year, the National Weather Service said it's a toss-up whether Illinois ...