Prepare for a return of frigid weather in March—and April. Editor at Large You could be forgiven for not noticing that last month was the planet's third warmest February on record. That’s because ...

In an early sign of the winter weather that's coming, the dreaded polar vortex is making news yet again. The polar vortex is "ramping up from its summer slumber," said meteorologist Judah Cohen in an ...

When the polar vortex stumbles, the weather at ground level can pivot from mild to brutal in a matter of days. A circulation that usually spins quietly above the pole can suddenly send lobes of Arctic ...

Like much of the U.S., Wisconsinites woke up Tuesday morning to bitter cold conditions. Many schools and colleges throughout the Milwaukee area closed as the area braced for the dangerous freezing ...