A G1-Minor geomagnetic storm watch is in effect for July 21, 22 and 23, 2022 as a result of slow-moving coronal mass ejection (CME) coupled with negative polarity coronal hole high speed stream (CH HSS).
Mostly active levels are anticipated on July 20 with a slow-moving CME that left the Sun on July 15 after an approximate 37-degree long, E/W oriented filament erupted around 13:08. While most of the ejecta was reabsorbed, a subsequent partial-halo CME was produced during the event, with a part of it directed toward Earth.
Active geomagnetic field levels are expected to carry over into July 21 and 22, reinforced by a negative polarity CH HSS that arrives as early as July 21.
As a result, a G1 – Minor geomagnetic storming is likely from July 21 to 23.
Partial-halo CME produced on July 15, 2022. Credit: NASA/ESA SOHO LASCO C2. Acquired on July 15, 2022
Solar activity was low over the past 24 hours, with no M-class or greater flares. All of the numbered regions on the disk were stable or in decay.
The activity is expected to remain low with a chance for M-class flares (R1-R2, Minor-Moderate radio blackouts) and a slight chance for X-flares (R3 Strong or greater radio blackouts) through July 22.
Featured image credit: NASA/ESA SOHO LASCO C2. Acquired on July 15, 2022
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