![]() ![]() ![]() 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. 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. Base Reflectivity Doppler Radar loop for Tucson AZ, providing current animated map of storm severity from precipitation levels. : National Oceanic and Atmospheric Administrations : National Weather Service. The value of the dBZ depends upon the mode the radar is in at the time the image was created. Latest weather radar images from the National Weather Service. 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). Yesterdays Radar Loop shows areas of precipitation for the prior day. One scale (far left) represents dBZ values when the radar is in clear air mode (dBZ values from -28 to +28). Az Live Doppler RadarInteractive Tucson, AZ weather map allows for personalized. 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. So, a more convenient number for calculations and comparison, a decibel (or logarithmic) scale (dBZ), is used. Reflectivity (designated by the letter Z) covers a wide range of signals (from very weak to very strong). "Reflectivity" is the amount of transmitted power returned to the radar receiver. ![]() 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.The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan. Current and future radar maps for assessing areas of precipitation, type, and intensity. The higher the dBZ, the stronger the rainrate. Doppler radar sends the energy in pulses and listens for any returned signal. 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. See the latest Arizona Doppler radar weather map including areas of rain, snow and ice. One scale (far left) represents dBZ values when the radar is in clear air mode (dBZ values from -28 to +28). See a real view of Earth from space, providing a detailed view of. Be sure to 'Reload/Refresh' to ensure you are looking at the most recent image. Current and future radar maps for assessing areas of precipitation, type, and intensity. Disclaimer Information Quality Help Glossary. Each reflectivity image you see includes one of two color scales. Current Conditions Radar Forecasts Rivers and Lakes Climate and Past Weather Local Programs NWS Doppler Radar Click on image for more radar options. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service National Level II NWS Radar Operation Center 1200 Westheimer Drive Norman, OK 73069 Comments Questions Please Contact Us. Radar Loops, Tucson AZ Doppler Radar Loops Weather - Weather WX doppler radar. Base Reflectivity Doppler Radar for Tucson AZ, providing current static map of storm severity from precipitation levels. The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan. Get the forecast for today, tonight & tomorrows weather for Tucson, AZ. ![]()
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