Radar Reflectivity (dBZ) Type of precipitation Rainfall rate
0-30 dBZ Light rain up to 3 mm/hr
30-45 dBZ Moderate rain 3-25 mm/hr
45-55 dBZ Convective storm 25-100 mm/hr
+55 dBZ Severe storm +100 mm/hr
Larger droplets have higher radar reflectivity values (dBZ).
These dBZ values can be mapped with different colours.
Data can also be mapped as rainfall rates - mm per hour.
Several images can be looped to make radar movies.
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