Cold front sweeps U.S. dropping temps 20–30° below normal with storms, rain, and snow. See maps and why it’s so cold nationwide.

GOOD AFTERNOON HERE IS THE CURRENT VIEW OUTSIDE WITH YOUR CURRENT CONDITIONS. HERE'S A LOOK AT CURRENT TEMPERATURES ON THE MAP. A POTENT COLD FRONT IS IN THE PROGRESS OF SWEEPING THROUGH THE BAY AREA.

Just like snowflakes, no two cold fronts are exactly alike. Some are weak, only offering a brief shift in the wind direction as well as a subtle, almost unnoticeable drop in temperatures. Others, ...

It brings bitter cold in the winter, relief from the heat during summer, and sometimes severe storms too. A “cold front” marks the transition from a warmer air mass to a relatively cooler one, and is ...