Glancing blow CME possible on November 1

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, 2020, was analyzed by the SWPC and determined to be a possible glancing blow on November 1. The source of the flare was a large AR 2778 which produced multiple B- and C-class flares…

C4.8 solar flare erupts from AR 2736, full-halo CME produced

C4.8 solar flare erupts from AR 2736, full-halo CME produced

A solar flare measuring C4.8 at its peak erupted from newly-emerged AR 2736 on March 20, 2019. The eruption started at 10:35, peaked at 11:18 and ended at 11:34 UTC. The region was also responsible for several B-class flares over the past 7 hours. The flare was…

Major solar flare erupts near the eastern limb, no Earth-directed CMEs

Major solar flare erupts near the eastern limb, no Earth-directed CMEs

A pair of solar flares erupted near the eastern limb of the Sun at about 00:55 and 03:25 UTC on July 23, 2017, and were observed in STEREO-A EUVI 195 imagery. The source is Active Region 2665 which produced a long-duration M2.4 solar flare and Earth-directed CME on…

CME hits Earth, sparks G2 – Moderate geomagnetic storm

CME hits Earth, sparks G2 – Moderate geomagnetic storm

A coronal mass ejection (CME) produced by the July 14th M2.4 long-duration solar flare hit Earth's magnetic field at 06:01 UTC on July 16, 2017. G2 – Moderate geomagnetic storming started 9 hours later. The S1 Minor solar radiation storm that started at 09:00…

Long-duration M2.4 solar flare erupts, Earth-directed CME

Long-duration M2.4 solar flare erupts, Earth-directed CME

Active Region 2665 produced a long-duration solar flare measuring M2.4 at its peak time on July 14, 2017. The event lasted for more than 2 hours; it started at 01:07, peaked at 02:09 and ended at 03:24 UTC. The eruption produced a coronal mass ejection (CME) with an…

CME headed toward Earth, impact expected around 12:00 UTC on May 26

CME headed toward Earth, impact expected around 12:00 UTC on May 26

An eruption near the center of Earth-facing side of the Sun produced a partial HALO CME (coronal mass ejection) during the early UTC hours of May 23, 2017. The CME is weak, but it has an Earth-directed component. Arrival at Earth is expected around 12:00 UTC on May…

New tool could predict large solar storms more than 24 hours in advance

New tool could predict large solar storms more than 24 hours in advance

A new measurement and modelling tool/technique, developed by Dr Neel Savani of Imperial College London and NASA's Goddard Space Flight Center, could give more than 24 hours' notice of large magnetic storms from the Sun that could be harmful to systems on…

Huge solar filament facing Earth

Huge solar filament facing Earth

A huge solar filament is facing Earth today and, if it doesn't erupt, will continue to do so in the coming days. Stretched out, it would be more than 857 780 km or 533 000 miles long, which is more than 67 Earth diameters. Image below shows this filament as…

Many views of a massive CME – July 23, 2012

Many views of a massive CME – July 23, 2012

On July 23, 2012, a massive cloud of solar material erupted off the sun's right side, zooming out into space. It soon passed one of NASA's Solar Terrestrial Relations Observatory, or STEREO, spacecraft, which clocked the CME as traveling between 2 900 – 3…