On Tuesday, July 21, powerful solar flares are forecasted to occur… (вспышка · солнечный · июль)
On Tuesday, July 21, powerful solar flares are forecasted to occur on the Sun; a series of such events began on Monday. Scientists predict that M-class flares of the second-to-last magnitude will be expected on July 20 and 21. Powerful solar flares are anticipated on both Monday and Tuesday, July 20 and 21.
Consensus
- Solar flares of class M are forecasted for July 20–21.
- The overall solar activity during this period remains low.
- Solar flares may be accompanied by plasma ejections.
- There is a possibility of geomagnetic storms if the ejected material reaches Earth.
- A coronal hole is expected to send fast solar wind toward Earth on July 22.
- Geomagnetic storm levels G1–G2 are possible.
- The UV index in Moscow will reach 6 on July 22, requiring sun protection measures.
Points of divergence
- A series of solar flares began on Monday, July 20, and is expected to continue into the night of July 21–22. — mn
- The last X-class flare occurred in early July, associated with a record sunspot group directed toward Earth. — mn
- The UV index reached 7 on July 19 due to the periphery of an anticyclone centered over the White Sea. — mn
- A major solar activity peak ended on July 7, caused by two sunspot groups, with one being the largest in 2026 and second-largest in a decade. — vm
- Sunspot group 4478 reached its maximum size on June 28, covering approximately 1200 units. — vm
Coverage (2 sources)
- High UV index and solar flares forecast for the coming days — Московские новости
- Scientists: Solar flares of the penultimate class M are expected on July 20 and 21 — Вечерняя Москва