Negative polarity CH HSS sparks G2 – Moderate geomagnetic storm

Earth is under the influence of a negative polarity coronal hole high speed stream (CH HSS)…

Filament eruption produces partial-halo CME, glancing blow expected

A solar filament eruption took place shortly before 12:00 UTC on February 20, 2021, producing a…

Slow-moving transient sparks vivid auroras around the Arctic circle

Solar wind parameters reflected the arrival of a slow-moving transient at approximately 08:23 UTC on January…

Unsettled to active geomagnetic field levels expected, G1 geomagnetic storm watch in effect

Unsettled to active geomagnetic field levels are possible on January 5, 2021, due to the onset…

G1 – Minor geomagnetic storm watch in effect for December 23 and 24

A series of positive polarity, polar connected, coronal hole high speed streams (CH HSS) are expected…

CME impact detected, G3 – Strong geomagnetic storm watch remains but confidence diminishing

A geomagnetic sudden impulse — CME produced by a long-duration C7.4 solar flare on December 7,…

Long-duration C7.4 solar flare produces asymmetric full halo CME, impact expected on December 9

A long-duration solar flare measuring C7.4 at its peak erupted from Active Region 2790 — positioned…

Moderately strong M4.4 solar flare erupts, CME produced

A moderately strong solar flare measuring M4.4 at its peak erupted at 13:11 UTC on November…

Biggest sunspot in years producing multiple B- and C-class solar flares

Although solar activity remains at low levels, Active Region 2786 — the biggest sunspot in years…

Glancing blow CME possible on November 1

A Coronal Mass Ejection (CME) produced by a C4.3 flare at 06:16 UTC on October 27,…