Solar Storms and Flares - NASA Science

A strong X1.9 solar flare erupted from the sun's surface at 9:49 p.m. ET on Nov. 30, and NASA’s Solar Dynamics Observatory caught it in action. The flare appears as a bright flash on the Sun’s edge, followed by a plume of hot material rising into space. Solar flares are powerful bursts of energy. They can disturb radio communications, affect navigation signals, and pose risks to spacecraft and astronauts — which is why NASA and NOAA track them so closely. Credit: NASA/SDO | Space 360

Solar Activity Report: November 17-23, 2025 Solar activity remained at low levels throughout the reporting period, predominantly within the B-class flare range. Four high-intensity C-class flares and several weaker C-class events were observed, with the largest—a C9.9—occurring on November 19 from a region just beyond the northeast limb. No Earth-directed CMEs were detected during this interval. The latest helioseismic far-side map indicates the presence of two active regions, both with a high p

Solar Activity Report: December 22-28, 2025 Solar activity was low at the start of the week, with X‑ray flux generally confined to the low C‑class range aside from a few higher C‑class events. Activity increased markedly on December 27, highlighted by an M5.1 flare from active region 14325 at the east limb and a C9.9 flare from active region 14318 near the disk center. M‑class activity continued into December 28, when active region 14325 produced an impulsive M1.3 flare and active region 14317 g

Solar Activity Report: January 26 - February 1, 2026 Solar activity over the past week ranged from low to very high levels. The week began with relatively low activity, highlighted by two strong C-class flares on January 26: a C8.8 flare from active region 14355 and a C5.0 flare from active region 14351. Activity then tapered off, with only a few minor C-class flares observed through January 30. On January 31, activity intensified again as active region 14366 produced multiple high-level C-class

How NASA Tracked the Most Intense Solar Storm in Decades - NASA Science