The polar jet stream will take a deep dive across the eastern U.S. spilling widespread cooler-than-normal temperatures for ...

In short, zonal flow brings quick hits. Expect brief rain, quick clearing, and limited cold. Meridional flow, on the other hand, bends the atmosphere into slow-motion mode, allowing polar air and ...

As Tropical Storm Melissa brews in the Caribbean, experts are raising the alarm on the storm's potential strength, and where its path could lead.