AuroracastUK

Space 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

356803:0006:0009:0012:0015:0018:0021:0000:0003:0006:0009:0012:0015:0018:0021:0000:00
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

3568Wed 01:00Wed 13:00Thu 01:00Thu 13:00Fri 01:00Fri 13:00Sat 01:00
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