Brief S1 solar radiation storm observed after large far side CME

High-energy solar protons briefly reached S1 – Minor solar radiation storm levels on May 26, 2026,…

Earth-facing Region 4436 produces M1.9 solar flare and CME

A moderately strong solar flare measuring M1.9 erupted from geoeffective Active Region 4436 at 16:12 UTC…

G2 geomagnetic storm watch issued for May 15, aurora possible across northern U.S.

The forecast marks a shift from quiet to unsettled geomagnetic conditions on May 14 to expected…

M5.7 solar flare erupts from Region 4436, launches large CME from east limb

A Type II Radio Emission with an estimated velocity of 650 km/s was detected at 13:29…

M-class flare risk remains high from Regions 4420 and 4425 through April 29

Region 4420 produced three M-class flares on April 26 — an M1.4 flare at 14:03 UTC,…

Late April visibility window allows blue auroras over Arctic regions

Late April conditions across high-latitude regions are opening a narrow observational window for blue auroras, produced…

X2.5 solar flare erupts at 08:13 UTC, second X-class event of April 24

A Type II Radio Emission with an estimated velocity of 1 869 km/s was associated with…

Major X2.4 solar flare erupts near Sun’s west limb

A 10 cm Radio Burst (TenFlare) lasting 6 minutes and with peak flux of 570 sfu…

Solar activity increases as Region 4420 moves toward disk center, raising potential for Earth-directed CMEs

An M4.4 solar flare erupted at 08:48 UTC on April 23 from Active Region 4419 (N15W57),…

G2 – Moderate geomagnetic storm watch in effect for April 17 and 18

NOAA’s Space Weather Prediction Center (SWPC) issued a G2 – Moderate geomagnetic storm watch for April…