• Modest CME glancing blow from May 28 long-duration solar flare

    A small part of coronal mass ejection (CME) produced by a long-duration C-class solar flare on May 28 hit Earth on June 2, 2021, barely disturbing Earth's magnetic field. Solar wind parameters are likely to become slightly enhanced due to the influence of a…

  • Geomagnetic storm watch in effect for May 18

    NOAA SWPC forecasters have issued a geomagnetic storm watch for May 18, 2021, after a pair of coronal mass ejections (CMEs) launched from the Sun on May 13 and 14. Enhanced solar wind parameters are expected on May 17 due to the influence of a negative polarity…

  • CME impacts Earth, sparking G3 – Strong geomagnetic storm

    A coronal mass ejection (CME) produced by a filament eruption around 10:00 UTC on May 9, 2021, has reached Earth at 06:43 UTC on May 12. G3 – Moderate geomagnetic storm levels were observed at 12:59 UTC. The CME arrived at the DSCOVR spacecraft at 05:47 UTC. Solar…

  • G2 – Moderate geomagnetic storm watch in effect for April 25

    A partial halo Coronal Mass Ejection (CME) produced by the C3.8 solar flare from Region 2816 at 04:35 UTC on April 22 is heading toward Earth and is expected to arrive on April 25. As a result, a G2 – Moderate geomagnetic storming is expected. This CME has been…

  • 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) on March 1, 2021, sparking G1 – Minor and G2 – Moderate geomagnetic storming. Solar wind speed started increasing late February 28, from 369 km/s at 22:00 UTC to 521 km/s at…