storm · magnetic · level (буря · магнитный · уровень)
A powerful G3.33-level geomagnetic storm has begun on Earth. On an annual scale, this is the second strongest storm after a major event from January 19-21 at level G4.67 and the March 21 storm at level G3.
Consensus
- A magnetic storm of G3.33 level began on Earth on July 4th
- The storm started with a delay of one day compared to the forecast
- Solar mass ejections caused the event and affected Earth's magnetic field for nearly 24 hours
- This was the second strongest magnetic storm this year after an event in January (G4.67)
- Scientists noted that despite large sunspot groups, no major solar flares occurred
Points of divergence
- The first solar mass ejection arrived on July 3rd around 14:00 Moscow time and was weaker than the second one that began at midnight on July 4th — vm
- The storm reached G3.33 level in the morning and weakened to slightly below G2 by noon — fontanka
- The storm was predicted two days earlier, but began with a delay of one day from schedule — vesti
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