Mossoró records fog and 18ºC this Thursday (11) Known for its high temperatures and imposing sun, the city of Mossoró experienced a different morning this Thursday (11). Those who left their homes in the early hours of the day found a city that recorded a temperature of 18ºC and fog. Images of the fog were recorded by city residents, mainly around 5 am and 6 am. (See video above). 📳 Click here to follow the g1 RN channel on WhatsApp According to meteorologist José Espínola Sobrinho, from the Federal Rural University of the Semi-Arid (Ufersa), the fog began to lose strength throughout the morning and practically dissipated around 7:30 am. According to the expert, the earth's surface received a small amount of radiation on Wednesday (10) and, during the night and early morning, this radiation was lost in the form of "long wave radiation". "With this loss of radiation from the surface, this loss of heat from the surface, the surface cooled. And today, between 5 and 6 am, we recorded a temperature of around 18ºC", he explained. Mist in Mossoró this Thursday morning (11) Reproduction The meteorologist explained that the surface was cold, but there was high relative humidity, something close to 100%, due to a layer of warm, humid air on the surface. According to José Espínola Sobrinho, the hot air condensed when it came into contact with the cold surface, which formed clouds close to the surface. "Fog means that the clouds that form on other days from a certain height, from a ceiling, today they started to form exactly close to the surface, due to this cooling of the surface and the contact between the mass of humid air with the surface. As a result, water vapors condensed. Thus forming fog", he explained. "Fog is nothing more or nothing less than the formation of clouds in contact with the surface of the ground," he added. According to him, when the sun began to reach a greater height on the horizon, the vapors "that were already being dissipated, were dissipated more quickly", returning to the predominant condition of clear skies with the strong presence of the sun. Most watched videos on g1 RN