Geomagnetic warning: Scientists informed about auroras on July 24
![]() On July 21, the Sun experienced several separate coronal mass ejections directed toward Earth. This led to the formation of a rare halo-coronal ejection, a cloud of magnetic field and charged particles ejected into space at speeds of up to 3000 km/s. It will take them several days to reach our planet. According to a warning issued by NOAA’s Space Weather Prediction Center, the ejection will reach Earth on July 24. It will lead to a class G2 geomagnetic storm. The G-index characterizes the intensity of a geomagnetic storm in terms of the impact of variations in the Earth’s magnetic field on people, animals, electrical engineering, communications, navigation, etc. On this scale, magnetic storms are categorized into levels from G1 (weak storms) to G5 (extremely strong storms). A G2 storm is classified as moderate. |
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