SpaceTRC / Space Weather Centre
Track the storms from the Sun
Solar flares, the solar wind and geomagnetic storms affect satellites, GPS, radio and power grids; the strongest can push aurorae as far south as Türkiye. This page brings together live data from NOAA’s Space Weather Prediction Center with plain-language explanations.
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NOAA scales
Now and the next three days
NOAA rates space weather impacts on three scales, each with severity 1–5. Zero means quiet.
Live data
From the Sun to Earth: four measurements
Kp index · last 7 days and forecast
Lighter bars are NOAA’s forecast. 5 and above is a storm.Solar X-rays · last 24 hours
…X-ray flux measured by the GOES satellites. Each letter (A, B, C, M, X) is ten times stronger than the one before; M- and X-class flares can cause radio blackouts.
Solar wind speed
…Spacecraft at the L1 point between Earth and the Sun measure the wind 15–60 minutes before it reaches Earth. Typical speeds are 300–500 km/s; fast streams above 700 km/s can bring storms.
Interplanetary magnetic field (Bz)
…Aurora forecast (northern hemisphere)
NOAA’s OVATION model shows the probability of aurora for the next 30–90 minutes. Colours from green to red mean increasing probability. The further south the ring spreads, the lower the latitudes from which aurora can be seen.
Sunspot cycle
Blue: observed (13-month average), orange: NOAA predictionLatest NOAA alerts
Original headlinesSee the latest images of the Sun in four wavelengths in the Live Sun section and sky events in the Sky Calendar.
- All live data: NOAA Space Weather Prediction Center (SWPC): scales, Kp and Kp forecast, GOES X-ray flux, real-time solar wind (L1), sunspot cycle and alerts.
- Aurora map: NOAA SWPC OVATION model.
Last updated: 2 November 2026