A G2 - Moderate geomagnetic storm watch is in effect for April 17 and 18, 2026, due to an incoming coronal hole high-speed stream expected to enhance solar wind conditions by late April 17. The event could cause minor operational impacts on high-latitude power systems, satellites, and HF radio communications, while increasing the chance of aurora sightings across northern U.S. states.

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A strong solar flare measuring M7.5 erupted from Active Region 4409 at 01:17 UTC on April 4, 2026. The event started at 01:07 and ended at 01:23 UTC. No radio signatures indicating a coronal mass ejection (CME) were detected, despite the region’s position near the center of the solar disk, where any CME produced would likely be Earth-directed. Forecast conditions indicate solar activity will likely remain at moderate levels through April 6, with a slight chance of X-class flares, while geomagnetic conditions are expected to reach G1 - Minor to G2 - Moderate storm levels on April 4 under the combined influence of the April 1 CME and a negative polarity coronal hole high-speed stream.

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A filament eruption associated with a C6.1 solar flare from Active Region 4403 at 23:28 UTC on April 1, 2026, produced an asymmetric halo coronal mass ejection. Initial modeling indicates the bulk of the ejecta is directed north of Earth’s orbit, with a possible glancing impact early on April 4 that could trigger minor to moderate geomagnetic storming. Current geomagnetic conditions remain influenced by a combined coronal hole high-speed stream and prior CME activity.

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A major solar flare measuring X1.4 at its peak erupted from Active Region 4405 at 03:19 UTC on March 30, 2026. The event started at 02:47 and ended at 03:44 UTC. It produced a large partial-halo CME, with a glancing blow to Earth expected around 18:00 UTC on March 31.

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A G3 - Strong geomagnetic storm developed late on March 20 into early March 21, 2026, after a coronal mass ejection that left the Sun on March 18 impacted Earth. The storm intensified after at least two CME arrivals, with solar wind speeds reaching 567 km/s and the interplanetary magnetic field turning strongly southward to −28 nT.

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An Earth-directed coronal mass ejection (CME) produced by an M2.7 solar flare on March 16, 2026, is expected to impact Earth on March 19, producing G2 - Moderate geomagnetic storming and aurora at mid-latitudes.

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A moderately strong solar flare measuring M2.7 erupted from Active Region 4392 at 12:15 UTC on March 16, 2026. The event lasted 24 minutes.

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A G1 - Minor geomagnetic storm is in progress on February 22, 2026, with Kp index values reaching 5 since 03:00 UTC, according to the NOAA Space Weather Prediction Center (SWPC). At 08:00 UTC, the agency issued a G2 - Moderate warning valid through 15:00 UTC, forecasting a possible rise to Kp 6 later in the day as solar-wind conditions remain elevated.

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A positive polarity coronal hole high speed stream currently interacting with Earth’s magnetic field produced a G2 - Moderate geomagnetic storm, with the K-index peaking at 6 at 20:00 UTC on February 16, 2026. The storm may generate visible aurora across northern U.S. latitudes and cause minor operational effects in satellite and power systems.

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An M1.0 solar flare erupted from Active Region 4373 at 08:58 UTC on February 13, 2026, launching a coronal mass ejection (CME) expected to glance Earth around February 15–16. SWPC forecasts G1 - Minor to isolated G2 - Moderate geomagnetic storm conditions as the CME interacts with a co-rotating interaction region and a positive-polarity coronal-hole high-speed stream.

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