• G4 – Severe or greater geomagnetic storm forecast, aurora likely as low as Alabama and California

    ByTeo Blašković

    A major X5.1 solar flare erupted from Active Region 4274 at 10:04 UTC on November 11, 2025, producing a large Earth-directed coronal mass ejection (CME). NOAA SWPC issued a geomagnetic storm watch predicting G4 – Severe or greater conditions for November 12, G3 – Strong for November 13, and G1 – Minor for November 14. On November 12 and 13, aurora may be visible as far south as Alabama and northern California.

  • Major X1.2 solar flare erupts from Region 4274 producing fast CME

    ByTeo Blašković

    Active Region 4274 produced its second X-class solar flare since it emerged from the far side last week, this time peaking as X1.2 at 09:19 UTC on November 10, 2025. This is now the third X-class flare since the November 4 X1.8 and X1.1. A coronal mass ejection (CME) was associated with the latest event and is expected to have an Earth-directed component.

  • Earth-directed CME produced by M7.4 solar flare, strong geomagnetic storm forecast

    ByTeo Blašković

    Solar activity reached high levels on November 5, 2025, as Region 4274 (N24E40) produced two powerful M-class flares – an M7.4 at 11:19 UTC and an M8.6 at 22:07 UTC. The full-halo CME from the first event is expected to reach Earth late November 6 to early November 7, likely producing G3 – Strong geomagnetic storm conditions and visible auroras across Canada and the northern United States.

  • Solar activity increases to high levels, Earth-directed CMEs possible in days ahead

    ByTeo Blašković

    Two powerful X-class solar flares erupted on November 4, 2025 — an X1.8 from Region 4274 and an X1.1 from a region just beyond the east limb — launching CMEs largely off the solar limb. NOAA forecasts G1 – Minor to G2 – Moderate geomagnetic storming from late November 6 into 7 as Earth may experience a glancing shock from the flares combined with a coronal hole high-speed stream.