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…

Impulsive M7.5 solar flare erupts from Earth-facing Region 4409, geomagnetic conditions remain elevated

Region 4409 is located at the center of the solar disk, suggesting any coronal mass ejection…

Asymmetric halo CME following April 1 filament eruption forecast to deliver a glancing blow on April 4

A filament eruption spanning approximately 25° occurred in Active Region 4403 at 23:28 UTC on April…

Major X1.4 solar flare erupts from AR 4405, producing a large CME

A Type II Radio Emission with an estimated velocity of 1 872 km/s was associated with…

Geomagnetic storm reaches G3 levels after March 18 CME impacts Earth

A G3 – Strong geomagnetic storm was recorded late on March 20 into early March 21,…

Earth-directed CME triggers G2 geomagnetic storm watch, aurora possible as low as New York

NOAA’s Space Weather Prediction Center (SWPC) issued a G2 – Moderate geomagnetic storm watch, forecasting the…

M2.7 solar flare erupts from Region 4392, CME produced

A Type II Radio Emission with an estimated velocity of 1 227 km/s was associated with…