Kp 4 is a step up from Kp 3 and below Kp 5.
What Kp 4 means tonight
At Kp 4 the auroral oval expands to cover central Scotland, most of Iceland comfortably, and the southern parts of Scandinavia. For UK observers, Kp 4 is the threshold where aurora becomes visible from dark sky sites in Scotland and occasionally northern England. During the current solar maximum, Kp 4 events occur multiple times per month.










