The image above shows a classic supercell-a thunderstorm with a rotating updraft-in Alabama on March 3. A radar image of a supercell thunderstorm producing a large tornado in Alabama on Ma(NOAA/Gibson Ridge)Ī storm that looks like a fishhook is particularly concerning. A line of heavy precipitation moving in unison is a sign of a squall line that could pack gusty winds. A patch of dark red moving toward your location means there’s a thunderstorm on the way. However, just looking at the precipitation alone won’t tell you everything you need to know about a storm. Most color scales are simple rainbows, and warmer colors indicate heavier precipitation. Just about everyone who’s ever used a weather app or watched a weather forecast on television knows the basics about spotting precipitation on weather-radar imagery.
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How to Read Weather Radar: 4 Useful Tips Look at More Than Just Precipitation The best way to stay safe from dangerous weather, whether you’re hiking or hanging out at home, is to invest in a good radar app for your phone and learn how to read what it’s telling you. The shape of the beam, which resembles a plus sign if you look at it head-on, also allows the radar to detect the size and shape of the objects it detects, which is useful in spotting hail and tornado debris. Software measures the strength of returning radiation and how long it took to bounce back in order to determine the location and intensity of the precipitation. Some of the radiation reflects off objects in the atmosphere-rain, hail, snow, you name it-and returns to the radar. Weather radar works by sending out two perpendicular beams of microwave radiation into the atmosphere. But bad storms don’t take us by surprise as much as they once did, thanks to weather radar.
It also means we have to be prepared for the threat of tornadoes, large hail, damaging winds, and floods. Spring is here, and that means warmer temperatures.
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