Weather Radar Colors Explained

Weather radar colors are a visual shortcut for reflected energy. In simple terms, the radar sends out energy, precipitation and other targets scatter some of that energy back, and the display assigns colors to different intensity ranges. The result is useful, but it is not a perfect map of rain, hail, snow, wind, or danger at the ground.

Common color pattern

Many public radar displays use cooler colors for lighter echoes and warmer colors for stronger echoes. Green often suggests lighter precipitation, yellow and orange often suggest moderate to heavier precipitation, and red or purple may suggest stronger echoes. The exact meaning depends on the product, scale, radar mode, and display settings.

Bright colors do not always mean the same hazard

A bright radar return may come from heavy rain, hail, melting snow, biological targets, ground clutter, or other non-precipitation effects depending on the situation. During thunderstorms, high reflectivity can be a clue that a storm deserves attention, but official warning decisions use more than color alone.

Why the same storm can look different

• The radar beam rises with distance, so faraway storms are sampled higher above the ground.
• Terrain, buildings, and radar maintenance can affect coverage.
• Different radar products show different parts of the atmosphere or different calculations.
• Color tables can vary between websites and apps.

Better way to use color

Use color as one clue. Combine it with storm motion, the shape of the echo, recent trends, nearby radar stations, official warnings, and local trusted weather information. On WxUp.TV, the radar loop is meant to make these trends easier to see, while the learning pages provide context for interpreting the display responsibly.

For official weather warnings and safety instructions, use weather.gov and local emergency management sources.