The Current Radar map shows areas of current precipitation (rain, mixed, or snow). The map can be animated to show the previous one hour of radar.

Precipitation intensity is measured by a ground-based radar that bounces radar waves off of precipitation. The Local Radar base ... is what enables the National Weather Service to detect the ...

The Chicago area could see strong-to-severe thunderstorms on Wednesday, with snow developing overnight into Thursday.

Thunderstorms could turn severe late Friday night into early Saturday morning. Damaging wind gusts of over 60 mph will be possible, which could lead to power outages. The strongest thunderstorms will ...