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. Pomona, California Current Weather Forecasts, Live Radar Maps & News WeatherBug Today's Weather - Pomona, CA 12:42 AM Ganesha HS - Feels like - Hi - Lo - Live Radar Weather Radar Map WEATHER DETAILS Pomona, CA Windchill - Daily Rain - Dew Point - Monthly Rain - Humidity - Avg. 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. ![]() 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). Doppler Radar Weather, Pomona Lake Number 2 Colorado Doppler Radar Weather - Weather WX doppler radar weather and radar loops for Pomona Lake Number 2 Colorado. 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. ![]() Click on the Layers menu in the bottom right of the radar to select radar options like Current Conditions, Storm. Wind direction is ENE at 8 mph with visibility of 10.00 mi. Track rain, storms and weather wherever you are with our Interactive Radar. NA 64F 18C More Information: Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast Extended Forecast for Pomona CA. ![]() The dBZ values increase as the strength of the signal returned to the radar increases. Pomona State Park Doppler Radar Current Conditions: Partly Cloudy, the temperature is 7☏, humidity 76. 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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