Midwest & Ohio Valley Weather Radar - Live Doppler Map

🌇️ Midwest & Ohio Valley Weather & Live Doppler Radar Guide

The Midwest and Ohio Valley sit at the crossroads of cold Canadian air and warm, humid Gulf air, which makes the region a battleground for severe weather. Spring and summer bring supercell thunderstorms, tornadoes and fast-moving derecho squall lines, while winter brings blizzards and lake-effect snow bands downwind of the Great Lakes.

📡 NOAA NEXRAD Stations: KLOT (Chicago)

Our interactive Midwest radar connects directly to NOAA Level-III NEXRAD stations across the region, including KLOT (Chicago / Romeoville). This dual-polarization S-band Doppler radar detects horizontal and vertical hydrometeor dimensions, allowing meteorologists and residents to distinguish between rain, snow, sleet, hail cores, and tornadic debris signatures across the Great Lakes and Ohio Valley.

🎨 How to Read Doppler Reflectivity (dBZ Scale)

Radar reflectivity measures precipitation density in decibels of Z (dBZ). Use this color reference when monitoring approaching storms on the Midwest & Ohio Valley radar:

⚠️ Seasonal Severe Storm Threats in Midwest & Ohio Valley

Tornadoes and derechos are the signature Midwest threats: Doppler radar shows supercell rotation and bow-shaped squall lines hours before they arrive. In winter the same radar tracks blizzard snow bands and narrow lake-effect snow bands that can drop several inches of snow on one county while leaving the next one dry.