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Space weather

Solar storms today

Coronal mass ejections (CMEs) from the last days, from NASA's DONKI catalog and NOAA, with our estimate of when each one reaches Earth, how strong the geomagnetic storm may be and where the aurora may show.

How the estimates work

Each CME's launch speed and direction come from NASA's analysis. A drag-based model slows it through the solar wind to give an arrival window at Earth (10–90 %), compared with NASA's own ENLIL run where there is one.

The storm level uses the NOAA G-scale (G1 minor to G5 extreme). Arrival times of CMEs are uncertain by many hours; treat every estimate as a forecast, not a promise.

Sources

  • NASA DONKI (CME analyses, ENLIL runs)
  • NOAA Space Weather Prediction Center (solar wind, Kp, G-scale)

See it move