The Kp index as a global aurora indicator

The Kp index is a global geomagnetic storm index with a scale of 0 to 9. Based on the Kp index, you can immediately know if there is a chance to see the Aurora or not. On the world map below, the average equatorward boundary of the midnight aurora is shown based on the current predicted Kp index. This gives us a good indication where we could see the Aurora at the current time for viewers where the local time is in the hours around midnight. The higher the Kp climbs, the closer the lines move towards the equator.

Keep in mind that this is not a precise boundary and that the aurora can still be viewed when it is positioned 4-5 degrees in latitude away from the viewer although it will appear about 20º above the horizon.

KP index

Observed Kp: 4.33
Predicted Kp: 4.67 (+1h Kp: 5.67)
1-> 3 = Quiet magnetic field
3 -> 4 = Active magnetic field
4 -> 9 = Storm
9 = Extreme storm
KP index
There are currently, on the basis of the current data, no chances to see an aurora display on the Middle latitudes
S1 Space radiation storm
At the moment there is a small S1 class space radiation storm active. This happens about 50 times in one solar cycle.

Auroral activity

Live
High latitude (77% chance)
Middle latitude (1% chance)
Low latitude (1% chance)
Today
Minor
Severe
High latitude
30%
55%
Middle latitude
20%
5%

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Latest news

Weak CME impact
Currently we see the effects of the arrival of a Coronal Mass Ejection (CME) at the ACE satellite. The solar wind speed rose with 107.28 km/sec to 558.2 km/sec.
  • Solar wind speed: 558.2 km/sec and density 9.1 p/cm3
  • IMF Bt (strength): 15.4 nT - Bz -14.4 nT
Strong S3 class Space radiation storm - This happens around ten times in a solar cycle
Moderate S2 Space radiation storm - This happens around 25 times in a solar cycle

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