Because of the established on the territory of Serbia heat wave the country is preparing for the introduction of the state of emergency will be imposed if the air temperature exceeds 40 degrees Celsius. For several weeks in Serbia, the temperatures during the day does not fall below 36 degrees. Due to lack of rainfall in many regions formed a flammable atmosphere.

"According to the forecasts of meteorologists, the hottest period is yet to come - between 15 and 21 July, - said the head of the sector of the Ministry of interior of Serbia for emergency situations Predrag Maric. In case, if continued growth of temperature, Republican headquarters for emergency situations will be forced to declare a state of emergency in the whole of Serbia or some of its areas". Now the authorities carefully monitor the situation, paying special attention to ensure uninterrupted water supply suffering from drought areas.

Over the last few weeks, when there is an increase in temperature, the number of requests for medical aid has increased several times, ITAR-TASS reported. In addition, during the same period, at least three people drowned in the waters, trying to find in them escape the heat.

The air temperature is the degree of Hotness, determined by how the air heats mercury or alcohol thermometer. For this thermometer should be free to Abdovitsa air and to be protected from direct sun rays heating. If the thermometer will get the rays of the sun, it will not show the temperature, and the temperature of the heated by the sun, mercury or alcohol. It is impossible to hold the thermometer and on the soil surface, as it will show the temperature of the soil. Therefore, agreed to measure the temperature of the air to hold the thermometer at a height of 2 m from the surface of the earth, for a standard stand in wooden louvered booth, i.e. in the terms of the shadows and free ventilation. This explains the difference in the readings of the common, household thermometers installed outside the window, and the data received at the airport, which can be very significant.