SC25 Declining Phase Geomagnetic Storm Risks
Key Questions
When is solar cycle 25 expected to enter its declining phase?
SC25 is projected to fade around mid-2026, with associated geomagnetic activity continuing during this period.
What geomagnetic activity resulted from AR4436 in May?
The region produced an M5.7 CME that caused a near-miss with G3-level storms on May 11, bringing auroras and GIC risks, alongside earlier G2 storms on May 4-5.
How will the SMILE mission improve space weather forecasts?
The SMILE spacecraft, launching in May 2026, will capture the first global X-ray images of Earth's magnetic shield to better understand solar wind interactions.
What effects can an Earth-facing coronal hole have?
A new 53-degree coronal hole facing Earth can trigger geomagnetic storms and auroras visible as far south as Iowa and Pennsylvania.
Are there health-related impacts from geomagnetic storms?
Studies link geomagnetic activity to spikes in melatonin disruption and heart attack rates during storm periods.
SC25 fading mid-2026: AR4436 M5.7 CME near-miss May10-13/G3 May11 auroras/GIC risks, G2 May4-5, melatonin/heart attack spikes; new coronal hole 53 Earth-facing. SMILE May 2026 X-ray imaging aids forecasts.