The signal produced by the object is then sent to the signal processor, where it is turned into usable data, called base data, which we see as reflectivity and velocity. This process is illustrated in the animation. When these pulses of energy encounter an object in the atmosphere, such as a raindrop, hailstone or snowflake, part of the energy pulse bounces off of the object and returns to the receiver. In essence the WSR works by shooting out pulses of electromagnetic energy at specific elevation angles above the ground. In addition to weather stations the weather surveillance radar (WSR) is one of the most important tools the meteorologists use to provide a detailed forecast. The Billings Doppler radar, labeled KBLX, is in the middle of the black circular region towards the left of the radar image, while the circulation is in the white circle. In this example, you can see a snapshot of Doppler radar data showing circulation at the time of the June 20th, 2010 Billings tornado. The warnings would be less accurate, putting more people and property at risk during hazardous weather.
So, why is the Doppler radar important? Without it, meteorologists would not be able to see what is going on inside a thunderstorm very well, nor would we be able to forecast the movement of a thunderstorm very precisely. Today we will discuss a few weather radar basics and weather radar websites.
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