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Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
The scale of dBZ values can be seen along the bottom of the image. Decibel relative to Z, or dBZ, is a logarithmic dimensionless technical unit used in radar. It is mostly used in weather radar, to compare the equivalent reflectivity factor (Z) of a remote object (in mm 6 per m 3) to the return of a droplet of rain with a diameter of 1 mm (1 mm 6 per m 3). [1]
Precipitation is measured using a rain gauge, and more recently remote sensing techniques such as a weather radar. When classified according to the rate of precipitation, rain can be divided into categories. Light rain describes rainfall which falls at a rate of between a trace and 2.5 millimetres (0.098 in) per hour. Moderate rain describes ...
But the forecast for the first storm is clear cut. It will drop a mix of rain and 1 to 3 inches of snow over parts of the Midwest and Interior Northeast Saturday before it exits by Sunday morning ...
"A roller-coaster ride of a forecast is in store across the Northeast this week, featuring a wintry mix, rain, a warmup and then the potential for an impactful storm late in the week into the ...
Snow will turn into sleet and freezing rain along parts of the Southeast, as well as southern Arkansas, the weather service reported. Forecasters warn that icy conditions, between a tenth and a ...
First day of winter is here: Snow and cold in forecast as winter begins The West: Rain and warm temperatures. Rain along the West Coast over Saturday and Sunday will douse northern California, the ...
Colder weather will descend on much of the East Coast late this week and a winter storm will bring both rain and snow that could reach up to a foot at higher elevations in parts of the Northeast ...