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The brightest reflectivities are found below the freezing level suggesting the potential warm rain processes. Whenever a forecaster notes that bulk of the brightest reflectivity is below the freezing level, then the normal ZR may significantly underestimate the rainfall rates. One possible exercise to conduct while showing the slide is to calculate the rainfall rate using the tropical verus normal ZR. Often, these type events have very low cloud bases and can have relatively low cloud tops. Therefore, the radar beam may overshoot tops if the storms are far from the radar site.
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