07.08.2025, 16:24
Magnetic storm will cover the Earth for almost a week
Source: OREANDA-NEWS
OREANDA-NEWS The geomagnetic situation on Earth is expected to deteriorate during the week due to a large coronal hole in the Sun, and the strongest magnetic storm in the last two months will begin on Friday, the Laboratory of Solar Astronomy at the Institute for Space Research and the Institute of Solar-Terrestrial Physics at the Russian Academy of Sciences reported.
"The beginning of the deterioration of the geomagnetic situation is expected today, on the night of Thursday to Friday, as a few hours before the arrival of the plasma cloud, the Earth will enter the zone of action of another large coronal hole, which will lead to a sharp deterioration in the geomagnetic background for almost a week," the report says.
According to recent calculations, the moment of arrival of a mass ejection to Earth after a large solar flare of the M4.4 level, which occurred on August 5, will cause significantly stronger geomagnetic effects than previously expected.
"Since the plasma cloud after the explosion was not ejected directly to the Earth, but sideways at an angle of about 45 degrees, it was previously assumed that the planet would either not touch at all, or peripheral sparse regions of ejected solar matter would come to the Earth. After the last recalculation, however, the models showed that the planet would be hit by a high-speed cloud core, and the impact on the magnetic field could be much stronger," the report said.
"At the moment, the arrival of plasma to the Earth is expected tomorrow, on the 8th, around 7 a.m. Moscow time. At the moment of impact, the Kp geomagnetic index is projected to rise to a value of 6, which is the highest value since June 13, when a storm of this level was last recorded," the laboratory informs.
According to the space weather scale, events of this scale are considered average, but they can affect energy systems located at high latitudes, lead to differences in the orbital demolition of spacecraft from the predicted one and affect the propagation of radio waves, the report says.
According to experts, "auroras in storms of this level are usually visible up to latitudes of 60 degrees, but sometimes they descend to latitudes of 50 degrees."
"The beginning of the deterioration of the geomagnetic situation is expected today, on the night of Thursday to Friday, as a few hours before the arrival of the plasma cloud, the Earth will enter the zone of action of another large coronal hole, which will lead to a sharp deterioration in the geomagnetic background for almost a week," the report says.
According to recent calculations, the moment of arrival of a mass ejection to Earth after a large solar flare of the M4.4 level, which occurred on August 5, will cause significantly stronger geomagnetic effects than previously expected.
"Since the plasma cloud after the explosion was not ejected directly to the Earth, but sideways at an angle of about 45 degrees, it was previously assumed that the planet would either not touch at all, or peripheral sparse regions of ejected solar matter would come to the Earth. After the last recalculation, however, the models showed that the planet would be hit by a high-speed cloud core, and the impact on the magnetic field could be much stronger," the report said.
"At the moment, the arrival of plasma to the Earth is expected tomorrow, on the 8th, around 7 a.m. Moscow time. At the moment of impact, the Kp geomagnetic index is projected to rise to a value of 6, which is the highest value since June 13, when a storm of this level was last recorded," the laboratory informs.
According to the space weather scale, events of this scale are considered average, but they can affect energy systems located at high latitudes, lead to differences in the orbital demolition of spacecraft from the predicted one and affect the propagation of radio waves, the report says.
According to experts, "auroras in storms of this level are usually visible up to latitudes of 60 degrees, but sometimes they descend to latitudes of 50 degrees."
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