AuroracastUKSpace weather data
Forecast
Live Hp30 measurements, the 3-day Hp30 outlook, solar wind conditions, and X-ray flux — everything you need to plan your aurora hunt.
48-hour history
Hp30 History
Measured Hp30 geomagnetic index over the last 48 hours (GMT/BST) · 30-minute cadence
Quiet (< 3)Active (3–4)Storm (5)Strong (6–7)Severe (8+)
3-day outlook
Hp30 Forecast
GFZ Potsdam 3-day Hp30 forecast · 30-min cadence · shaded band shows ensemble spread
Quiet (< 3)Active (3–4)Storm (5)Strong (6–7)Severe (8+)
25–75% bandhighmediumlow
Last 3 hours
Solar Wind
Real-time Bz component and solar wind speed from DSCOVR/ACE · Bz < 0 (southward) favours aurora activity
Last 24 hours
Solar X-ray Flux
GOES satellite X-ray flux · log scale · flare classes A → X