Space Weather
Tracker
Real-time Aurora Forecasts, Solar Flares, CME Tracking & Geomagnetic Storm Alerts.
Can I See the Northern Lights Tonight?
Kp IndexThe planetary Kp index (0–9) measures global geomagnetic disturbance. Higher = stronger aurora, visible farther from the poles.
Source: NOAA SWPC
Geomagnetic StormNOAA G-scale (G1–G5) rates geomagnetic storm strength derived from Kp. G1 minor storms can bring aurora to the northern US; G4–G5 push it to mid-latitudes.
Source: NOAA SWPC
Solar ActivityRates solar flare intensity from GOES X-ray flux over the last 24h. X-class = strongest (radio blackouts), M-class = moderate, C-class = minor.
Source: NOAA GOES
Aurora StatusOverall aurora activity level derived from current Kp. 'Active' means aurora is likely visible at high latitudes; 'Extreme' means far south.
Source: NOAA OVATION
Current Space Weather
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Solar Wind SpeedSpeed of the solar wind flowing past Earth. Baseline ≈ 400 km/s. Above 500 km/s often triggers aurora; above 700 km/s can cause storms.
Source: NOAA DSCOVR/ACE
IMF BzDirection of the interplanetary magnetic field. Negative (southward) values open Earth's magnetic shield and drive aurora. Strongly negative Bz is the single best aurora indicator.
Source: NOAA DSCOVR/ACE
Proton DensityDensity of protons in the solar wind. Higher density combined with strong wind speed and southward Bz amplifies geomagnetic response.
Source: NOAA DSCOVR/ACE
Mean visibility probability, northern hemisphere (≥ 45° N)
Solar flares can disrupt GPS accuracy, satellite links, and HF radio. X-class events cause the biggest blackouts; M-class may briefly degrade navigation.
Largest X-ray class · last 24 h
Real-time OVATION model overlay · Integration ready