Two weeks ago, I talked about an introduction to radar and how it works on a basic level. This time, we are looking into radar reflectivity specifically, the most popular product of weather radar.

Color on the reflectivity radar image represents the strength of the energy returned, measured in decibels (dBZ). As the dBZ increases, so does the rainfall rate. The National Weather service uses a ...

Severe thunderstorms swept through Mineral Wells, Texas, on the evening of April 28, 2026, as National Weather Service radar ...

The newest Doppler radars, the type all National Weather Service offices use, have dual-polarization. This means the electromagnetic pulse sent out to detect objects in the atmosphere is both ...

This study represents a collaborative effort between Michigan Tech Research Institute (MTRI), the University of Michigan's Transportation Research Institute (UMTRI) and Toyota's Collaborative Safety ...

HUNTSVILLE, AL (WAFF) - UAH confirmed chaff was the cause of high radar reflectivity, or the "blob" over West Huntsville Tuesday. They released a photo of what they said is fiberglass chaff found on ...

ABSTRACT The authors use variograms of radar reflectivity as a summary statistic to describe the spatial continuity of Alpine precipitation on mesogamma scales. First, how to obtain such variograms is ...

See a mistake? Contact us. Question: On some NEXRAD images, I sometimes see a negative value for dBZ (decibel related to Z) for the reflectivity. How can these values be negative? Answer: Of all of ...