A moderately-strong solar flare measuring M4.0 erupted from geoeffective Active Region 2975 at 11:29 UTC on March 28, 2022. The event started at 10:58 UTC and ended at 11:45.
The event was associated with a Type II Radio Emission at 11:23 UTC, with an estimated velocity of 1 259 km/s. Type II emissions occur in association with eruptions on the Sun and typically indicate a coronal mass ejection is associated with a flare event.
Additionally, a Type IV Radio Emission was registered at 11:37 UTC. Type IV emissions occur in association with major eruptions on the Sun and are typically associated with strong coronal mass ejections and solar radiation storms.
“EUV darkening was observed at 11:24 UTC in SUVI 195 imagery with the M4 flare suggesting a likely CME,” SWPC forecasters said at 12:30 UTC. “Analysis will be conducted as coronagraph imagery becomes available.”
The responsible region 2975 is located at the center of the solar disk, suggesting the CME generated by the flare is Earth-directed. The estimated time of arrival is March 30/31.
Featured image credit: NASA SDO/AIA 304. Acquired at 11:29 UTC on March 28, 2022.
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