Diamond dust may appear in the sky over Moscow. Yevgeny Tishkovets, a leading employee of the Phobos weather center, told RIA Novosti about this.
The forecaster clarified that it will be possible to observe this phenomenon in the morning of January 13th. According to him, on Thursday night, the most severe frosts since the beginning of the year will come to the capital region: in Moscow the temperature will drop to minus 20 degrees, and in the Moscow region from minus 15-20 degrees in the south and to minus 28 degrees in the north.
As a result, due to the abnormal cold and high humidity, intense freezing of water vapor will begin, and therefore, in the morning, the smallest ice crystals can float in the air, Tishkovets explained. He added that in meteorology they are called ice needles, diamond dust or clear sky precipitation.
The forecaster warned Muscovites that these crystals will reflect light and may lead to the appearance of such optical phenomena as a false moon or sun, light columns and others.
Earlier, the scientific director of the Hydrometeorological Center, Roman Vilfand, in an interview with RIA Novosti, warned that at the end of the working week, a sharp jump in temperature by 20 degrees and a drop in atmospheric pressure by 25-30 millimeters of mercury await.