![]() Since hail can cause the rainfall estimates to be higher than what is actually occurring, steps are taken to prevent these high dBZ values from being converted to rainfall. Hail is a good reflector of energy and will return very high dBZ values. These values are estimates of the rainfall per hour, updated each volume scan, with rainfall accumulated over time. Depending on the type of weather occurring and the area of the U.S., forecasters use a set of rainrates which are associated to the dBZ values. Weather forecast and conditions for Columbus, Ohio and surrounding areas. The higher the dBZ, the stronger the rainrate. Typically, light rain is occurring when the dBZ value reaches 20. The scale of dBZ values is also related to the intensity of rainfall. The value of the dBZ depends upon the mode the radar is in at the time the image was created. Notice the color on each scale remains the same in both operational modes, only the values change. The other scale (near left) represents dBZ values when the radar is in precipitation mode (dBZ values from 5 to 75). One scale (far left) represents dBZ values when the radar is in clear air mode (dBZ values from -28 to +28). ![]() Each reflectivity image you see includes one of two color scales. The dBZ values increase as the strength of the signal returned to the radar increases. Farmers are closely watching the weekend forecast because their soybeans and corn need rain. If you or a loved one has questions and needs to talk to a professional about gambling, call the Ohio Problem Gambling Helpline at 1-80 or the National Council on Program Gambling. So, a more convenient number for calculations and comparison, a decibel (or logarithmic) scale (dBZ), is used. WBNS-10TV Columbus, Ohio Columbus News, Weather & Sports. Please reload the page or try again later WEATHER DETAILS Columbus, OH Windchill - Daily Rain - Dew Point - Monthly Rain - Humidity - Avg. Reflectivity (designated by the letter Z) covers a wide range of signals (from very weak to very strong). 8:17 PM Linden McKinley HS - Feels like - Hi - Lo - Live Radar Failed to load Something went wrong loading the data. "Reflectivity" is the amount of transmitted power returned to the radar receiver. ![]() The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan.
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