Solar Activity and Space Weather Update thread

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Discussion Overview

This thread discusses solar activity and space weather updates, particularly focusing on sunspot regions and their characteristics over time, starting from the solar eclipse on August 21, 2017. Participants share observations, data, and relevant sources regarding solar flares, sunspot groups, and geomagnetic conditions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant proposes to monitor solar activity continuously, encouraging updates on significant solar events and personal observations.
  • Another participant notes the current status of sunspot regions 2671 and 2672, providing detailed statistics on their properties and flare probabilities.
  • A later post indicates that sunspot region 2671 has departed, while region 2672 is also diminishing, suggesting a potential for a spotless day soon.
  • Participants report the emergence of new sunspot regions (2673 and 2674) and discuss the implications of a new coronal hole facing Earth.
  • One participant expresses confusion about how sunspot locations are recorded on the Sun's surface, questioning the reference system used for tracking sunspots.
  • Another participant clarifies that active regions of sunspots are dynamic and receive sequential numbers as they appear, explaining the Sun's differential rotation.

Areas of Agreement / Disagreement

Participants generally agree on the ongoing monitoring of solar activity and the significance of sunspot regions, but there are varying levels of understanding regarding the mechanics of sunspot observation and the implications of solar phenomena.

Contextual Notes

Some participants express uncertainty about the movement of sunspots and the reference system for their locations, indicating a need for clarification on these technical aspects.

  • #451
Mon. March 30, 2026
X-CLASS SOLAR FLARE AND CME: NASA's Artemis rocket might be launching into a geomagnetic storm. This morning, an X-class solar flare hurled a fast and massive CME into space. It is expected to make contact with Earth on March 31st, sparking geomagnetic storms on the night before the Moon rocket's launch window opens.

854fc060-c2a4-2e08-b81d-8527d31bb2ff.gif
​
Above: An X1.5-class solar flare on March 30, 2026. Credit: Solar Dynamics Observatory​
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