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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 details of the data sources used for this report can be found on the William P Hobby Airport page. 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. The twister formed near the major southern. Typically, light rain is occurring when the dBZ value reaches 20. A tornado passing through Beltway 8 into Deer Park and Baytown, Texas caused extensive damage to power lines and property on Tuesday afternoon. 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. Southern District of Texas 1000 Louisiana, Ste. The other scale (near left) represents dBZ values when the radar is in precipitation mode (dBZ values from 5 to 75). HOUSTON A 54-year-old Baytown woman has pleaded guilty to wire fraud. 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. We are now leveraging our big data smarts to deliver on the promise of IoT. The dBZ values increase as the strength of the signal returned to the radar increases. Baytown, Texas 10-Day Weather Forecasts & Weekend Weather WeatherBug GroundTruth For more than 20 years Earth Networks has operated the world’s largest and most comprehensive weather observation, lightning detection, and climate networks. 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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