Filament eruption produces Earth-directed CME, G2 – Moderate geomagnetic storm watch in effect
A large filament eruption took place around Active Region 2987…
CME produced by filament eruption expected to reach Earth on November 27
An approximate 10-degree filament eruption, centered near S36E33, was observed in GONG H-alpha imagery beginning at 09:58 UTC on November 24, 2021. An associated coronal mass ejection (CME) was observed in SOHO/LASCO C2 imagery beginning at 14:12 UTC on November 24…
Glancing blow CME possible on July 23, G1 Geomagnetic Storm Watch
A glancing blow CME from the July 20 eruption could bring a chance for G1 – Minor geomagnetic storm condition on July 23, 2021. As a result, a G1 Geomagnetic Storm Watch is in effect. A ~4-degree solar filament centered at approximately N25E65 erupted from the…
Incoming CME, impact expected early May 12
Two coronal mass ejections (CMEs) with Earth-directed components were produced on the Sun on May 9, 2021. The impact is expected early Wednesday, May 12. Active Region 2833 produced a long-duration C-class solar flare measuring C4.0 at its peak at 14:49 UTC on May 9…
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 partial-halo CME. Analysis suggests a glancing blow from the periphery of the CME is likely on February 23 or 24. The CME signature was first observed in SOHO/LASCO C2…
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 of an anticipated Solar Sector Boundary Crossing (SSBC) followed by coronal hole influence late in the day. G1 – Minor geomagnetic storm conditions are likely on January 6…
Plasma filament eruptions detected on the Sun, Earth-directed CME possible
Two plasma filament eruptions were detected on the Sun on July 5, 2018, and it seems at least one weak Earth-directed Coronal Mass Ejection (CME) was produced; ETA July 9 or 10. In addition, a relatively strong farside eruption took place on July 5 and its CME (not…
Solar filament eruption, possible glancing blow on November 29
A solar filament was observed lifting off the Sun's northeastern quadrant beginning at approximately 04:45 UTC on November 25, 2017. An associated weak Coronal Mass Ejection (CME) was observed in SOHO/LASCO C2 and C3 imagery and the analysis shows a potential…
Filament eruption, glancing blow possible on April 15
An approximate 14 degree solar filament eruption began at 20:25 UTC on April 9, 2017, from the northeast quadrant of the Sun. The event generated a coronal mass ejection (CME) and a glancing blow is possible on April 15. The CME was first observed in SOHO/LASCO C2…
G2 geomagnetic storm in progress, G3 – Strong watch in effect for October 14
A filament in Sun's northeast quadrant erupted between 15:00 and 17:00 UTC on Saturday, October 8, 2016, producing an asymmetric, partial-halo CME. The CME, although faint, was first observed in LASCO C2 imagery beginning 00:48 UTC on October 9. It reached ACE…