Everything so far ran on history. The Sun is doing something right now. End by making a real call with live data, and come back tomorrow to see if you were right.
Loading tonight's outlook…
Will Kp reach 5 or more (a G1 storm, aurora visible from the northern US, Scotland and Scandinavia) in the next 24 hours?
Come back after 24 hours. This page keeps your call in this browser and scores it against the measured Kp, the same way the site scores its own alerts.