A series of powerful solar flares has sent multiple coronal mass ejections heading toward Earth, leading to a moderate geomagnetic storm watch for the July 4 holiday weekend.
The solar activity began on June 30, 2026, when Active Region 4479 emitted an X1.1 flare at 20:50 UTC, causing strong R3-level radio blackouts on the sunlit side of Earth for about an hour.
>>> David Tennant and Michael Sheen Thank Good Omens Fans in Heartfelt Video
NASA's Solar Dynamics Observatory recorded the event, which also produced Type II and Type IV radio emissions, indicating a coronal mass ejection traveling at roughly 1,496 kilometers per second.
Over a 24-hour period, the Sun released a total of 10 M-class flares in addition to the X-class eruption, all from sunspot regions 4475, 4478, and 4479.
The Space Weather Prediction Center issued a G2 moderate geomagnetic storm watch for July 3, forecasting that the incoming storms could push the aurora borealis farther south, potentially visible in states like New York and Idaho.
Solar physicist Tamitha Skov described the recent activity as a "Machine-gun sun" in a post on X, noting that more than five solar storms are en route, with at least three offering good chances for aurora displays.
>>> University of Missouri Scientists Create Artificial SpudCell Entity with 36 Genes
Skov added that the rapid succession of events has complicated modeling efforts by official agencies, writing that "NOAA and NASA model predictions do not show all the storms yet."
Independent analysis from spaceweatherlive.
com indicated that while the primary CME from the X1.1 flare shows a faint halo heading mostly north of the Sun-Earth line, official models still project a more direct, head-on impact.
>>> NYT Connections Puzzle 1116: Themes of Impersonation, History, and Sports
Forecasters emphasized that the brightness of the aurora will largely depend on the magnetic orientation of the solar storms when they collide with Earth's magnetic field.
