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. See a real view of Earth from space, providing a detailed view of. Hail is a good reflector of energy and will return very high dBZ values. Current and future radar maps for assessing areas of precipitation, type, and intensity. Base Reflectivity Doppler Radar loop for Tucson AZ, providing current animated map of storm severity from precipitation levels. The NOWRAD Radar Summary maps are meant to help you track storms more quickly and accurately. These values are estimates of the rainfall per hour, updated each volume scan, with rainfall accumulated over time. The Current Radar map shows areas of current precipitation. TUCSON, ARIZONA (AZ) 85757 local weather forecast and current conditions. Current Radar (WU) Current Radar (Intellicast) The Current Radar map shows areas of current precipitation. 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. Tucson Mountain Ranch rainfall forecast issued today at 8:04 am. The higher the dBZ, the stronger the rainrate. Typically, light rain is occurring when the dBZ value reaches 20. LOCAL Livestream Contests News 4 Tucson: Download Our Apps 4Warn Forecast 7-Day Forecast. 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. National Weather Service Radar for Tucson Current Weather Conditions Overcast in Tucson, temperature is 72F22C, dew point 71F22C, humidity 97. 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). Australia Tucson Radar NEXRAD Station EMX Animate United States Prescott, AZ Region Zoom: update in: 0 sec Radar Total Precip. 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. The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan.
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