The weather station is usually defined as a device that is used in order to determine the weather condition of a particular area by collecting meteorological information and data.
It is comprised of various measuring devices such as thermometer, barometer, which helps in measuring the atmospheric temperature and pressure.
In the given condition, the weather station has issued a tornado warning, that is moving in the northwest direction at a speed of 30 miles/hour. This provided information describes the velocity of the tornado, as from this data a meteorologist can determine in which direction and at what speed the tornado is moving. Prediction can be made from this data.
