History of The Weather Channel Network, and the "Forecast Earth"/environmental unit (however, certain portions of the "Forecast Earth" unit remain with TWC). The layoffs took effect on November 30 (The Weather Channel later stated it would air other environmental programs). With the shutdown of NBC Weather Plus that month as a result of NBC Universal's partial acquisition of The Weather Channel, certain meteorologists from the digital broadcast network were eventually integrated into TWC's on-camera weather staff; forecasting, radar and graphics systems used by other NBC Universal television news properties (including NBC News, CNBC and MSNBC) replaced the Weather Plus-branded banner graphics to fit The Weather
Weather radar filter them, but scientists began to study the phenomenon. Soon after the war, surplus radars were used to detect precipitation. Since then, weather radar has evolved on its own and is now used by national weather services, research departments in universities, and in television stations' weather departments. Raw images are routinely used and specialized software can take radar data to make short term forecasts of future positions and intensities of rain, snow, hail, and other weather phenomena. Radar output is even incorporated into numerical weather prediction models to improve analyses and forecasts. During World War II, military radar operators noticed