![]() ![]() Detroit Weather, Forecast, Severe Alerts. 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. Local Doppler Radar NjBy integrating our hyper-local weather data with Smart Home connected devices we are. 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. EUMETSAT Meteosat images are updated every 15 minutes. Live satellite images are updated every 10 minutes from NOAA GOES and JMA Himawari geostationary satellites. The higher the dBZ, the stronger the rainrate. View LIVE satellite images, rain radar, forecast maps of wind, temperature for your location. In fact, the snow should very well cut off or leave the area entirely between 7 p.m. Typically, light rain is occurring when the dBZ value reaches 20. Local Radar - Weather - CBS Detroit Watch CBS News Local Radar Current Conditions FC Partly Cloudy 70 70 Feels Like SSW 6mph Wind 88 Humidity More Weather NEXT Weather NEXT. Friday is the beginning of the end when it comes to the snow. 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). This view is similar to a radar application on a phone that provides radar, current weather, alerts and the forecast for a location. Each reflectivity image you see includes one of two color scales. This view combines radar station products into a single layer called a mosaic and storm based alerts. 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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