A Geiger counter is not needed. Radiation fog covered the Moscow region

Radiation fog was observed in Moscow and the region. Weather stations recorded it early in the morning of October 17. What kind of weather phenomenon is this, aif.ru found out from chief specialist of the Meteonovosti information portal Tatyana Pozdnyakova.

Safe phenomenon

“Some media called the fog “radioactive” – and this is wrong, the fog has nothing to do with radiation, and is called radiation. The formation of fogs is due to the fact that the Earth, due to long-wave radiation – thermal – cools down in clear, dry and windless weather. The lower layer of air cools quickly, water vapor condensation forms in it and fog forms. This is not dangerous at all, this is a common weather phenomenon for autumn,” says Tatyana.

In winter, advective fogs occur more often – they are formed when warm air masses come into contact with a snow-covered cold surface. And in the case of autumn radiation fogs, the reason is that the earth loses heat overnight and condensation occurs.

OK for October

“There was practically no fog in the capital this morning. Weather stations noted them in the Moscow region: fog with visibility of 500 meters was observed in Sheremetyevo, and also in Naro-Fominsk, Mozhaisk, and New Jerusalem. Most often, fogs form near bodies of water – there is a lot of moisture there,” added Pozdnyakova.

There is no cause for concern in the radiation fog: this frequency of their formation is completely typical for October.

“In 1991, the fogs in October lasted almost the entire month, and that’s when they really made life difficult. Now nothing out of the ordinary is happening,” the expert concluded.